CN1278264C - Method for managing water print relation database - Google Patents
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- CN1278264C CN1278264C CN 200310122488 CN200310122488A CN1278264C CN 1278264 C CN1278264 C CN 1278264C CN 200310122488 CN200310122488 CN 200310122488 CN 200310122488 A CN200310122488 A CN 200310122488A CN 1278264 C CN1278264 C CN 1278264C
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Abstract
The present invention relates to a method for managing a water print relation database, which belongs to the technical field of database copyright management. Firstly, water print embedding and extracting process management information is inputted by a user to establish a water print management registering list, the user selects a corresponding embedded and extracted water print process from the registering list according to data types, and a water print mapping list is established in the relation database; when novel data is inputted in the relation database to be embedded with a water print, data in the water print relation database is updated and the water print is extracted from the water print relation database, the management to the water print relation database is realized according to information supplied in the water print management registering list and the water print mapping list. Different data operation and management is respectively implemented for water print relation data and common relation data by the method of the present invention, a common relation database is changed into a water print relation database according to the requirements for copyright persons, and the copyright protection capability of a relation database management system is increased.
Description
Technical field the present invention relates to a kind of method of managing water print relation, belongs to the management of database copyright
Technical field.
Background technology " watermark " is former to refer in the process of papermaking, by the density of some special methods change paper pulp fibers, makes the icon or the literal of light and shade texture, to indicate the copyright of paper.Digital watermarking then is a customizing messages of representative writings being weighed people's identity; implant in advance in the protected information in the watermark mode; extract the original figure watermark by the relevant detection algorithm, or, prove the technology of the ownership of digital product copyright based on the assay of Statistics.It is a kind of another effective measures that the data copyright provided effective protection after cryptology.
The people such as Agrawal in IBM Corporation of world-renowned enterprise Almad research centre have delivered first piece and have been entitled as " Watermarking Relational Databases " document in the VLDB conference in August, 2002, described how to embed and to extract digital watermarking in relation data.People such as Agrawal has delivered one piece again and has been entitled as the article of " A SystemFor Watermarking Relational Databases " afterwards, showed the application of the watermarking algorithm that they proposed at database client, only finish watermark and embed raw data, extract the work of watermark information, its watermark information can not dynamically increase along with relation data, deletion, modification and synchronous change.Method of managing water print relation makes relational database management system have the relation data embed watermark, extracts watermark, the ability of management watermark.
According to the characteristics of digital watermarking and relational database management system, method of managing water print relation there is more special requirement.1. the relation data in the relational database allows certain modification and does not influence its normal use.Concerning the user, the correctness of these class data there is certain tolerance, the copyright protection that some correctness of sacrificing data exchange primary data information (pdi) for is worth.2. relational database need carry out relational calculus, and after carrying out a series of relational calculus process, watermark still will be attached on the raw data so.When 3. the data owner upgrades the relational database that has watermark, watermark information should add along with the renewal of data, and more the watermark information of new data and former relational database watermark information need be consistent, and this is one of difficult point of watermark relational database research.4. during watermark detection, neither need original watermark information, also do not need raw data just can from watermark data, restore watermark, realize the blind extraction of watermark.5. the digital product that has the data formation of watermark is transferred to have in the data base management system (DBMS) watermark management function or compatible and still can be moved, and watermark can be moved thereupon, can not lose easily.6. the managing water print relation system must have higher level security, and raw data and watermark information can not be split easily.7. there are essential distinction in watermark relation data and managing water print relation system.The watermark relation data is meant issues the data of using with other people after the copyright owner is with the raw data embed watermark information; The managing water print relation system can implement the system that watermark embeds, extracts, detects and manage to relation data.The copyright owner manages by the watermark relational database of key to oneself, and the embedding of watermark, the third party that detects not being authorized to are maintained secrecy.According to these specific (special) requirements, not only to guarantee to embed, extract the rationality of watermark flow process to the management of watermark relational database, also to guarantee the watermark relation data is implemented the most effective management, computing, renewal and migration.
In sum, managing water print relation not only needs relation data is carried out watermark interpolation, extraction, testing, also need to take into account the watermark relational database is implemented effectively management, such as the security of picture watermaking system, the problem of all many-sides such as synchronous renewal of data and watermark.
Summary of the invention the objective of the invention is to propose method of managing water print relation; this method can be created, and manages the watermark relational database, and relation data is carried out the watermark embedding; extract, detect and effectively management, finally reach purpose the raw data copyright protection.
The method of managing water print relation that the present invention proposes comprises following each step:
(1) user imports embedding, extracts watermark workflow management information, to set up a watermark management registration table;
(2) user selects the corresponding watermark flow process that embeds, extracts according to the data type in the relational database from the registration table of step (1);
(3) in relational database, set up an information mapping list, embed the required watermark information parameter name of flow process comprising the identifier of the selected embed watermark flow process of above-mentioned steps (2), the identifier that extracts the watermark flow process and corresponding watermark, need the table name of the relation database table of embed watermark, and input watermark information parameter value;
(4) when in the relation database table of need embed watermark, importing new data, the embed watermark flow process of selecting in the setting up procedure (2); From the mapping table of step (3), read the watermark parameters value, embed watermark in the data of input, and this watermark data deposited in the relation database table;
(5) during the data in upgrading the watermark relation database table, table name according to relation database table, the corresponding embed watermark process identification symbol of retrieval from the mapping table of step (3), and from the registration table of step (2) retrieval this embed watermark flow process the position, start this flow process, embed watermark in data updated;
When (6) from the watermark relation database table, extracting watermark, identifier according to extraction watermark flow process selected in the step (2), the position of watermark flow process is extracted in retrieval from the registration table of step (1), according to extracting the required parameter name input relevant parameters value of watermark flow process, start and extract the watermark flow process, extract watermark, obtain copyright owner's information.
Management information in the said method comprises in order to symbol, the position at embed watermark flow process place, the embed watermark flow process of sign embed watermark flow process required watermark parameters name and type, extracts the symbol of watermark flow process, the position of extracting watermark flow process place, required parameter name and the type of extraction watermark flow process in order to sign.
Data type in the said method comprises: any in numeric type data, text data, view data, voice data or the multi-medium data.
The another kind of method of managing water print relation that the present invention proposes comprises following each step:
(1) user imports embedding, extracts watermark workflow management information, to set up a watermark management registration table;
(2) user is according to the data type in the relational database, the selected corresponding watermark flow process that embeds, extracts from the registration table of step (1), and in relational database, set up an information mapping list, embed the required watermark information parameter name of flow process comprising the identifier of selected embed watermark flow process, the identifier that extracts the watermark flow process and corresponding watermark, need the table name of the relation database table of embed watermark, and input watermark information parameter value;
(3) reading of data from the relation database table of need embed watermark, selected embed watermark flow process in the setting up procedure (2) reads the watermark parameters value from mapping table, embed watermark in data, and this watermark data deposited in the relation database table:
(4) repeat above-mentioned steps, until the whole embed watermarks of relation database table quilt;
When (5) from the watermark relation database table, extracting watermark, identifier according to extraction watermark flow process selected in the step (2), the position of watermark flow process is extracted in retrieval from the registration table of step (1), according to extracting the required parameter name input relevant parameters value of watermark flow process, start and extract the watermark flow process, extract watermark, obtain copyright owner's information.
Management information in the said method comprises in order to symbol, the position at embed watermark flow process place, the embed watermark flow process of sign embed watermark flow process required watermark parameters name and type, extracts the symbol of watermark flow process, the position of extracting watermark flow process place, required parameter name and the type of extraction watermark flow process in order to sign.
Data type in the said method comprises: any in numeric type data, text data, view data, voice data or the multi-medium data.
In the said method, when relation database table by behind whole embed watermarks, also comprise to the step of another relation database table embed watermark:
The user is according to the data type in this relation database table, the selected corresponding watermark flow process that embeds, extracts from watermark management registration table, and with the identifier of selected embed watermark flow process, the identifier that extracts the watermark flow process and the required watermark information parameter name of corresponding watermark embedding flow process, need the table name of the relation database table of embed watermark to copy in the information mapping list of having set up, and in mapping table, import the watermark information parameter value.
The method of managing water print relation that the present invention proposes, be a kind of demand that can be different according to the copyright owner, promptly different data types is selected the corresponding watermark flow process that embeds or extract, to data embed watermark or extraction watermark, realize managing water print relation.By the watermark relational database being implemented effectively management, improve the security and the operability of relational database management system.The watermark that is embedded into has stronger invisible and robustness, can carry out normal relational calculus and data migtation etc.By method of the present invention, make that relational database management system can either be to the data of new insertion embed watermark one by one, when being modified, dynamically revises watermark data watermark information, the consistance of watermark before and after keeping upgrading, can also implement different data manipulation and management to the watermark relation data with the conventional relationship data respectively, change the conventional relationship database into the watermark relational database according to the copyright human needs.In the managing water print relation system, the watermark information that embeds, keys etc. are transparent to the copyright owner, the information of copyright owner, watermark relational database is recorded in the specific registration table and mapping table, and making relational database management system whether be embedded with watermark to relation data has had judgement.
Description of drawings
Fig. 1 is the FB(flow block) of the inventive method.
Fig. 2 is the FB(flow block) of the another kind of method that proposes of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
During system start-up, create the embed watermark flow process, extract watermark workflow management registration table, its structure comprises the only identifier of embed watermark flow process, the residing position of embed watermark flow process, the watermark information parameter name and the type of the required input of embed watermark flow process, extract the identifier of watermark flow process, extract the residing position of watermark flow process, extract the parameter name and the type of the extraction watermark of the required input of watermark flow process.
The login mechanism that the user proposes by the inventive method with different embed watermark flow processs, extracts the watermark flow process and is input in the registration table.During registration, the user is to the identifier of system's input embed watermark flow process, extraction watermark flow process, embed watermark flow process, the position of extracting the watermark flow process, the embed watermark flow process, extract information such as required parameter name of watermark flow process and type after, these information are recorded in the registration table.
The user is when setting up the watermark relation database table, the managing water print relation system set up one with the embed watermark flow process, extract the corresponding information mapping list of watermark flow process registration table, identifier comprising the embedding in the above-mentioned registration table, extraction watermark flow process, the watermark information parameter name that the embed watermark flow process is required, required watermark parameters value of embed watermark flow process and watermark relation database table table name.The user selects the embed watermark flow process according to data type, and watermark information parameter name that the managing water print relation system is required with identifier, the watermark embedding flow process of the embedding of the watermark in registration table flow process automatically and watermark relation database table table name etc. copy in the information mapping list.The prompting user imports the numerical value that these watermarks embed flow process watermark parameters name, and it is stored in the relevant position of information mapping list.
When the user imports new data in the watermark relation database table, the managing water print relation system at first reads the watermark information parameter value in the information mapping list, start the embed watermark flow process, the data of these parameters and new input are embedded the input parameter of flow process as watermark, the operation watermark embeds flow process, obtains depositing in the watermark relation database table behind the watermark relation data.Repeat the input process of above new data, can obtain the watermark relation database table, repeat the opening relationships tables of data and then obtain a watermark relational database.
When the user need upgrade certain watermark data, relational database management system is according to the table name of data place watermark relation database table, in information mapping list, read corresponding watermark information parameter value, with the input parameter of the data after these parameters and the renewal as the embed watermark flow process, start watermark and embed flow process, to the data updated embed watermark.So just guaranteed the whole consistance of embed watermark.
The inventive method also can be to the conventional relationship data embed watermark in the relational database Already in.At first judge and whether have information mapping list in the relational database.If exist, then the user is according to the data type in this relation database table, selected corresponding embed watermark flow process from watermark management registration table, and with the identifier of selected embed watermark flow process, the identifier that extracts the watermark flow process and the required watermark information parameter name of corresponding watermark embedding flow process, need the table name of the relation database table of embed watermark to copy in the information mapping list, and in mapping table, import the watermark information parameter value.If do not exist, then create this information mapping list earlier, carry out aforesaid operations again.
Start the embed watermark flow process after reading the watermark parameters in the information mapping list, read data in the relation database table, with the input parameter of watermark information parameter as the embed watermark flow process, the operation watermark embeds flow process embed watermark in these data.Read next bar data, repeat said process, to the last data embed and finish.
When extracting watermark, at first from information mapping list, retrieve the identifier that extracts the watermark flow process according to the table name of watermark relation database table, from registration table, retrieve the position of extracting watermark flow process parameter name and extracting watermark flow process place according to this identifier again, the prompting user imports and extracts watermark flow process parameter value, start and extract the watermark flow process, extract the watermark that embeds, obtain copyright owner's information.
Below be one embodiment of the present of invention: when system start-up, at first create a registration table that embeds and extract the watermark flow process.Now the type of used data is the numeric type data in the example below the supposition, only registers a kind of existing cloud watermark and embed, extract flow process in registration table.The user is respectively to the identifier that system's input embeds: embed watermark flow process 1.The position at embed watermark flow process place: D: WaterMarking WMIN.exe.Totally four of watermark information parameter names are respectively: copyright owner's image information, key, numeric type attribute number, embedding ratio that can embed watermark, type be respectively: image, integer, integer, floating type.The identifier that the user extracts the watermark flow process to system's input is: extract watermark flow process 1.Extract the position at watermark flow process place: D: WaterMarking WMOUT.exe.Totally three of the parameter names of extraction watermark: the numeric type attribute number of key, embed watermark, embedding ratio.Type is respectively: integer, integer, floating type.The managing water print relation system with these information stores in registration table, as shown below:
| Embed watermark process identification symbol | Embed watermark flow process position | Embed watermark flow process desired parameters name | Embed watermark parameter type of name | Be extracted into watermark process identification symbol | Extract watermark flow process position | Extract watermark flow process desired parameters name | Extract the watermark parameters type of name |
| Embed watermark flow process 1 | D:Water Marking WMIN. exe | Copyright owner's image information | Image | Extract watermark flow process 1 | D:Water Marking WMOUT.exe | Key | Integer |
| Embed watermark flow process 1 | D:Water Marking WMIN.exe | Key | Integer | Extract watermark flow process 1 | D:Water Marking WMOUT.exe | Numeric type attribute number that can embed watermark | Integer |
| Embed watermark flow process 1 | D:Water Marking WMIN.exe | Numeric type attribute number that can embed watermark | Integer | Extract watermark flow process 1 | D:Water Marking WMOUT.exe | The embedding ratio | Floating type |
| Embed watermark flow process 1 | D:Water Marking WMIN.exe | The embedding ratio | Floating type |
Use CREATE WMTABLE order to create the watermark relation database table, the managing water print relation system sets up an information mapping list automatically, the user selects corresponding embed watermark flow process according to the data type of pre-input in the watermark relation database table from registration table.So, the identifier of embed watermark flow process: embed watermark flow process 1, extract the identifier of watermark flow process: extract watermark flow process 1 and corresponding watermark and embed the required watermark information parameter name of flow process---the numeric type attribute number of copyright owner's image information, key, embed watermark, embedding ratio, need the table name of the relation database table of embed watermark to be copied in the information mapping list.The user is to the correspondence position input watermark information parameter value of above-mentioned table, and they are respectively: copyright owner's image 1, key are 11, and the numeric type attribute number of embed watermark is 6, and the embedding ratio is 0.2.As shown below:
| Need the tables of data table name of embed watermark | Embed watermark process identification symbol | Extract the watermark flow process and represent symbol | Embed watermark flow process desired parameters name | The parameter value of embed watermark information |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | Copyright owner's image information | Copyright owner's image 1 |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | Key | 11 |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | Numeric type attribute number that can embed watermark | 6 |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | The embedding ratio | 0.2 |
When the user inserted a new record in above-mentioned watermark relation database table, system read the watermark information parameter value in the information mapping list: numeric type attribute, embedding ratio 0.2 that 11,6 of copyright owner's images 1, key can embed watermarks.According to embed watermark process identification symbol embed watermark flow process 1 from registration table, retrieve embed watermark flow process position D: WaterMarking start the embed watermark flow process behind the WMIN.exe.The embed watermark flow process is such to the process of new data embed watermark:
(1) receives the watermark parameters value: numeric type attribute, embedding ratio 0.2 that 11,6 of copyright owner's images 1, key can embed watermarks;
(2) receive new data;
(3) convert copyright owner's image 1 to the cloud characteristic information;
(4) generate a water dust value;
(5) according to the numeric type attribute number of key, data owner key assignments, embed watermark, the embedding ratio judges whether this data recording meets watermark and embed condition;
(6), then the water dust value in the step (4) is embedded in the new data on the corresponding property value, and the data that will embed the water dust watermark deposit in the watermark relation database table if being judged as in the step (5) is true;
(7) if be judged as vacation in the step (5), directly new data is deposited in the watermark relation database table;
(8) repeating step (1) inserts the new watermark data of next bar to (7).
During a certain data in revising above-mentioned watermark relation database table, the managing water print relation system handles like this.Read the watermark information parameter value in the information mapping list table, they are respectively: numeric type attribute, embedding ratio 0.2 that 11,6 of copyright owner's images 1, key can embed watermarks.According to embed watermark process identification symbol embed watermark flow process 1 from registration table, retrieve embed watermark flow process position D: WaterMarking start the embed watermark flow process behind the WMIN.exe.The embed watermark flow process is such to the step of data updated embed watermark:
(1) receives the watermark parameters value: numeric type attribute, embedding ratio 0.2 that 11,6 of copyright owner's images 1, key can embed watermarks;
(2) receive a data updated;
(3) convert copyright owner's image 1 to the cloud characteristic information;
(4) generate a water dust value;
(5) according to the numeric type attribute number of key, renewal data owner key assignments, embed watermark, the embedding ratio judges whether this tuple meets watermark and embed condition;
(6), the water dust value in the step (4) is embedded into more in the new data on the corresponding property value if being judged as in the step (5) is true;
(7) if be judged as vacation in the step (5), skip this data, do not do any operation;
(8) repeating step (1) upgrades the new watermark data of next bar to (7).
If the user need be changed the conventional relationship tables of data into the watermark relation database table; so that data are wherein implemented copyright protection; its process is; at first; the user is utility command ALTER WM_TABLEDATA (the conventional relationship tables of data table name of WM_TABLEDATA for having set up) in relational database; the managing water print relation system judges whether there is information mapping list in the storehouse earlier; if have; and the watermark information that has had watermark relation table 1 then directly points out the user to select required embed watermark flow process and extraction watermark flow process.Here also embedding flow process and extract flow process with the cloud watermark that has existed in the said system is example.With the embedding in the registration table, the identifier embed watermark flow process 1 of extracting the watermark flow process and extraction watermark flow process 1, the input parameter name of embed watermark flow process: the numeric type attribute number of copyright owner's image information, key, embed watermark, embedding ratio copy in the information mapping list.The correspondence position input watermark information parameter value of user in table, they are respectively: copyright owner's image 2, key are 0, the numeric type attribute number of embed watermark is 11, the embedding ratio is 0.25.System copied to these values and conventional relationship tables of data table name watermark relation table 2 in the information mapping list after input finished.As shown below:
| Need the numerical table table name of embed watermark | Embed watermark flow process mark symbol | Extract watermark flow table symbol | The embed watermark flow process is required several | The numerical value of embed watermark information |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | Copyright owner's image information | Copyright owner's image 1 |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | Key | 11 |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | Several type attribute numbers that can embed watermark | 6 |
| Watermark relation table 1 | Embed watermark flow process 1 | Extract watermark flow process 1 | The embedding ratio | 0.2 |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | Copyright owner's image information | Copyright owner's image 2 |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | Key | 0 |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | Several type attribute numbers that can embed watermark | 11 |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | The embedding ratio | 0.25 |
If there is not watermark is that the information mapping table is then set up this table earlier, select cloud watermark embed watermark flow process, extract the watermark flow process, with the embedding in the registration table, the identifier embed watermark flow process 1 of extracting the watermark flow process and extraction watermark flow process 1, the input parameter name of embed watermark flow process: the numeric type attribute number of copyright owner's image information, key, embed watermark, embedding ratio copy in the information mapping list.Input watermark information parameter value: copyright owner's image 2, key are 0, the numeric type attribute number of embed watermark is 11, the embedding ratio is 0.25.As shown below:
| Need the tables of data table name of embed watermark | Embed watermark process identification symbol | Extract the watermark flow process and represent symbol | Embed watermark flow process desired parameters name | The parameter value of embed watermark information |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | Copyright owner's image information | Copyright owner's image 2 |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | Key | 0 |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | Numeric type attribute number that can embed watermark | 11 |
| Watermark relation table 2 | Embed watermark flow process 1 | Extract watermark flow process 1 | The embedding ratio | 0.25 |
Set up after the information mapping list, the managing water print relation system reads watermark information parameter value in the table, and they are respectively: copyright owner's image 2, key are 0, the numeric type attribute number of embed watermark is 11, the embedding ratio is 0.25.According to embed watermark process identification symbol embed watermark flow process 1 from registration table, retrieve embed watermark flow process position D: WaterMarking start the embed watermark flow process behind the WMIN.exe.The embed watermark flow process is such to the process of data embed watermark:
(1) receive the watermark information parameter value: copyright owner's image 2, key are 0, the numeric type attribute number of embed watermark is 11, the embedding ratio is 0.25;
(2) from relation table, read data;
(3) convert copyright owner's image 2 to the cloud characteristic information;
(4) the cloud characteristic information according to step (3) generates a water dust value;
(5) according to the numeric type attribute number of key, data owner key assignments, embed watermark, the embedding ratio judges whether these data meet watermark and embed condition;
(6), then the water dust value in the step (4) is embedded in the data on the corresponding property value if being judged as in the step (5) is true;
(7) if be judged as vacation in the step (5), skip this data, do not do any operation;
(8) repeating step (2) is to (7), embeds required watermark up to the data of whole relation database table.
When watermark relation database table watermark relation table 1 is extracted digital watermarking, at first in information mapping list, retrieve the identifier embed watermark flow process 1 of extracting the watermark flow process, according to this identifier in registration table, retrieve extract watermark flow process position D: WaterMarking WMOUT.exe and extract the extraction watermark parameters name of watermark flow process: key, the numeric type attribute number of embed watermark, in the embed watermark ratio.The user to the parameter value of managing water print relation system input watermark extracting is: key is 11; The numeric type attribute number of embed watermark is 6; The embedding ratio is 0.2, starts to extract the watermark flow process.Its concrete steps of extracting watermark are such:
(1) receive the watermark parameters value: key is 11; The numeric type attribute number of embed watermark is 6; The embedding ratio is 0.2;
(2) from relation table, read data;
(3) according to the numeric type attribute number of key, data owner key assignments, embed watermark, the embedding ratio judges whether these data meet watermark and embed condition;
(4) if being judged as in the step (3) is true, then embedded the property value of water dust watermark, the water dust value is taken out from data and preserved;
(5) if be judged as vacation in the step (3), skip this data, do not do any operation;
(6) repeating step (2) obtains all water dust watermarks to (5).
At last, by the water dust watermark that reduction is extracted, copyright owner's pictorial information that just can obtain embedding.
Claims (6)
1, a kind of method of managing water print relation is characterized in that this method comprises following each step:
(1) user embeds, extracts watermark workflow management information to system's input, to set up a watermark management registration table;
(2) set up the corresponding information mapping list of a watermark relation database table table name and above-mentioned watermark management registration table;
(3) user selects the watermark flow process, and import the watermark information parameter value in information mapping list according to the data type in the watermark relational database from the watermark management registration table of step (1);
(4) when in the watermark relation database table of need embed watermark, importing new data, the embed watermark flow process of selecting in the setting up procedure (3), from the information mapping list of step (2), read the watermark parameters value, embed watermark in the data of input, and this watermark data deposited in the watermark relation database table;
(5) during the data in upgrading the watermark relation database table, read the watermark information parameter value in the information mapping list, and from the watermark of step (1) management registration table the position of this embed watermark flow process of retrieval, start this flow process, embed watermark in data updated;
When (6) from the watermark relation database table, extracting watermark, identifier according to extraction watermark flow process selected in the step (3), the position that the watermark flow process is extracted in retrieval from the watermark management registration table of step (1), according to extracting the required parameter name input relevant parameters value of watermark flow process, start and extract the watermark flow process, extract watermark, obtain copyright owner's information.
2, the method for claim 1 is characterized in that the watermark workflow management information described in the step (1) comprises in order to symbol, the position at embed watermark flow process place, the embed watermark flow process of sign embed watermark flow process required watermark parameters name and type, extracts the symbol of watermark flow process, the position of extracting watermark flow process place, required parameter name and the type of extraction watermark flow process in order to sign.
3, the method for claim 1 is characterized in that the data type in the step (3) comprises: any in numeric type data, text data or the view data.
4, a kind of method of managing water print relation is characterized in that this method comprises following each step:
(1) user embeds, extracts watermark workflow management information to system's input, to set up a watermark management registration table;
(2) set up the corresponding information mapping list of a watermark relation database table table name and above-mentioned watermark management registration table;
(3) user selects the watermark flow process, and import the watermark information parameter value in information mapping list according to the data type in the watermark relational database from the watermark management registration table of step (1);
(4) reading of data from the watermark relation database table of need embed watermark, the embed watermark flow process of selecting in the setting up procedure (3), from information mapping list, read the watermark parameters value, embed watermark in data, and this watermark data deposited in the watermark relation database table;
(5) repeat above-mentioned steps, until the whole embed watermarks of watermark relation database table quilt;
When (6) from the watermark relation database table, extracting watermark, identifier according to extraction watermark flow process selected in the step (3), the position that the watermark flow process is extracted in retrieval from the watermark management registration table of step (1), according to extracting the required parameter name input relevant parameters value of watermark flow process, start and extract the watermark flow process, extract watermark, obtain copyright owner's information.
5, method as claimed in claim 4 is characterized in that the watermark workflow management information described in the step (1) comprises in order to symbol, the position at embed watermark flow process place, the embed watermark flow process of sign embed watermark flow process required watermark parameters name and type, extracts the symbol of watermark flow process, the position of extracting watermark flow process place, required parameter name and the type of extraction watermark flow process in order to sign.
6, method as claimed in claim 4 is characterized in that the data type in the step (3) comprises: any in numeric type data, text data or the view data.
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| CN 200310122488 CN1278264C (en) | 2003-12-26 | 2003-12-26 | Method for managing water print relation database |
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| CN 200310122488 CN1278264C (en) | 2003-12-26 | 2003-12-26 | Method for managing water print relation database |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101853682B (en) * | 2005-05-23 | 2011-09-07 | 松下电器产业株式会社 | Regenerating device and regenerating method |
| CN100369039C (en) * | 2005-06-15 | 2008-02-13 | 武汉大学 | Method for protecting data base data copyright by digital watermark technology and application thereof |
| CN102013088B (en) * | 2010-11-19 | 2012-12-12 | 王义海 | Digital watermark generation and embedding method based on comprehensive characteristics of digital archival resources |
| CN106919813A (en) * | 2015-12-25 | 2017-07-04 | 中国电信股份有限公司 | Big data watermark management method and system |
| CN110688675B (en) * | 2019-09-25 | 2021-07-13 | 卓尔智联(武汉)研究院有限公司 | Data leakage tracing device and method based on privacy protection and readable storage medium |
| CN111241576B (en) * | 2020-01-03 | 2022-07-01 | 南京邮电大学 | Zero watermark method for distribution protection of database |
| CN112052063A (en) * | 2020-09-28 | 2020-12-08 | 平安普惠企业管理有限公司 | Watermark filling method, system, terminal and storage medium for application program |
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