CN102591935A - Distributive data storage management method and distributive data storage management system - Google Patents
Distributive data storage management method and distributive data storage management system Download PDFInfo
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Abstract
The invention provides a distributive data storage management method, which includes the steps: constructing a plurality of databases distributed on at least two servers and used for storing element objects, and setting corresponding codes for the databases; setting identifiers for the to-be-stored element objects, storing the element objects in the constructed databases, recording the identifiers of the element objects and storing the codes of the databases of the element objects; and establishing and storing the corresponding relation between the identifiers and the database codes. The distributive data storage management method further includes the steps for acquiring the element objects: acquiring the identifiers of the to-be-searched element objects, and extracting the element objects from the target databases based on the corresponding relation between the identifiers and the database codes. The invention further provides a corresponding system. By the aid of the method and the system, requirements of current open multipurpose GIS (geographic information system) data management can be met, particularly distributive geographic element information can be shared, and powerful support and vigor are showed during practical use.
Description
Technical field
The present invention relates to data storage and technical field of information processing, relate in particular to Distributed Storage management method and system.
Background technology
(Geographic Information System GIS) is a kind of computer system of gathering spatial data and storage, management, analysis and expressive space information that has to GIS-Geographic Information System.Raw data and the drawing output thereof of adopting the GIS technology to make high-efficiency management have spatial distribution characteristic become possibility, and progressively become the strong assistant of Modern Enterprise Administration and government decision.Data then are the bases of GIS-Geographic Information System, and in the existing systems development and Design, what input cost was maximum is exactly data processing, and its input expense accounts for system's foundation and more than 70% of maintenance.From application point of view, the application of GIS constantly enlarged in recent years, the commercial GIS platform of a large amount of maturations occurred, and the construction of spatial data more and more comes into one's own.Based on the construction of spatial data infrastructure, people have begun the research of Spatial Data Sharing and interoperability.
Geographic element comprises the key element that expression earth surface natural form is comprised; Like physical geography key elements such as landforms, water system, vegetation and soil and the mankind's formed key element of nature remodeling circle in activity in production, like social economy's key elements such as settlement place, road net, communication apparatus, industrial or agricultural facility, economic civilization and administrative signs.Usually these natural objects are abstracted into the key element object with one or more geometrical properties and attribute.For example, can represent a road key element with line, represent a plot with planar with representing a sewer with point, simultaneously, except these space characteristics, also with some other non-space characteristics abstract be attributive character.
In GIS-Geographic Information System GIS, these a large amount of geographic elements have constituted the most basic information source, have left these geographic element data, can not express or express really the geographical world intuitively.Special, distributedly, GIS provides under the good support in using, and various novel GIS use and surge forward.Distributed is exactly that data and program can not be positioned on the server, but disperses to be stored in a plurality of servers, with the geographic information data of dispersed and distributed on the network and to receive its database manipulation that influences be research object.The distributed task that helps is distributed in The whole calculations machine system and is optimized, and can solve the problems such as data isomery, data sharing, computing complicacy of existence.As in the professional GIS-Geographic Information System of large scale scope, thematic GIS-Geographic Information System or regional geography infosystem; The Data Source of these infosystems, type, structure are varied, have only through distributed storage and could realize that data resource shares the rational Application with data.
The problem that faces now is how the data resource sharing need be carried out effective storage administration to these distributed objects; In application, how to obtain the data that are distributed on the different pieces of information server, particularly effectively obtain same geographic element canned data on different data servers.
Summary of the invention
In view of this, the present invention provides a kind of Distributed Storage management method and system, can realize information sharing and effectively management.
A kind of Distributed Storage management method provided by the invention comprises:
Make up a plurality of databases that are distributed at least two servers, be used to store the key element object, and be respectively each database respective coding is set;
For key element object to be stored is provided with identification code, said key element object is kept in the constructed database, write down each key element object identification code, preserve the coding of the database of this key element object;
Set up and preserve the corresponding relation of said identification code and said database coding.
This memory management method also comprises the step of from said database, obtaining the key element object:
Obtain the identification code of key element object to be found;
Corresponding relation based on said identification code and said database coding extracts said key element object in target database.
The present invention also provides a kind of distributed information storage management system, comprising:
A plurality of databases are distributed on two servers at least, are used to store the key element object, and each database is provided with respective coding;
The key element object of storing in the said database is provided with identification code, and said key element object information is kept in the constructed database;
Management server is used to preserve the corresponding relation of the identification code of said each key element object, the database coding of preserving this key element object and identification code and said database coding, and is used for the response element query requests.
This storage management system also comprises specifically comprising the reading device of key element object:
The identification code query unit is used to obtain the identification code of key element object to be found;
Extraction unit, the corresponding relation based on said identification code and said database coding extracts said key element object in target database.
The invention provides a kind of storage scheme of distributed geographical element information newly, comprise that distributed data resource memory location is unique coding of database, the unique identification of distributed geographical key element object; Under based on conditions such as existing networks, the improvement to the unique identification information of storehouse and key element object has been proposed, promptly convert the basic information unit (BIU) of integer ID into as Network Transmission; Under environment based on distributed storage; Obtain manner to the geographic element object has been proposed; The unique identification that is storehouse and key element object is discerned distributed resource; The present invention has satisfied the multiduty GIS data management requirement of current opening, and especially this distributed information of geographic elements can be shared, and shows powerful support and vigor in actual use.
Description of drawings
Fig. 1 is the process flow diagram of Distributed Storage method provided by the invention;
Fig. 2 obtains schematic flow sheet for the data that provide in the embodiment of the invention;
The data-storage system configuration diagram of Fig. 3 for providing in the embodiment of the invention.
Embodiment
In view of deficiency of the prior art, the present invention proposes a kind ofly to the Distributed Storage method, be particularly useful for the storage of the geographic element object among the GIS-Geographic Information System GIS.
In technical scheme provided by the invention, mainly set forth based on following two aspects.
One, in distributed software system, data message commonly used adopts database to store usually, also has based on the file directory form, even also has the mixing storage of the two.On GIS data; Because the GIS data generally comprise spatial data and attribute data two parts; Wherein spatial data comprises the spatial relationship of coordinate information, geological information and the inter-entity of geographical entity; Two dimension, three-dimensional even multidimensional distribution phenomenon are arranged on form, on characteristic, have characteristics such as data type is many, data volume is big, therefore more complicated than the data in the information processing commonly used.Its storage mode mainly contains: (1) document storage mode: be about to all data (spatial data and attribute data) and be stored in one or more files.Advantage is flexibly, promptly can define the file layout of oneself arbitrarily.Shortcoming: need to use the instrument of oneself developing to realize operations such as updating data, inquiry, retrieval; Can not the multi-user concurrent service data; Safety of data exists the recovery problem of insoluble problem, particularly data, will be difficult to investigation and recovery in case mistake occurred; File layout is various, and the shared obstacle that exists maximum for data particularly is difficult to adapt to the distributed environment requirement.(2) file and relational database managed together mode: spatial data adopts file mode to manage usually, and attribute data then adopts database to manage.Perhaps can in relational database, only write down the path that its file exists simply for large-scale data structure.(3) adopt the database storing mode: absolutely empty data and attribute data all adopt database technology to store data; Usually have based on relational database, the object relationship database schema is arranged; The OODB Object Oriented Data Base memory module is also arranged; In a word, this mode has certain efficient to updating data, inquiry and retrieval to a certain extent, to the concurrent and data of data shared a kind of settling mode of comparatively optimizing is provided.(4) based on the storage mode of Intel Virtualization Technology; Comprise virtual, network virtual of equipment; Improved the efficient of storage to a greater extent, the memory device of various isomeries is mapped as a single storage resources, and is transparent fully to the user; Reach the purpose of interoperability, satisfied the demand of data sharing.
Be employed in the storage mode under the database among the present invention, this mode has ubiquity and representativeness to a certain extent.
Two, on the basis of storage; In order to satisfy the uniqueness of geographic element object; Adopt the unique identifier in the open distributed tag system to identify an object; Because unique identifier is a basic skills of the real world people being represented and confirm certain entity, be widely used in every field, such as country code, Bank Account Number, identification card number etc. can guarantee uniqueness to a certain extent, use independence, permanent, can calculate, readability.
Based on the characteristic of geographic element object, also adopt unique identifier to come geographic element object of unique identification among the present invention, particularly can adopt UUID to identify.
Below in conjunction with accompanying drawing the present invention is carried out detailed description.
It is that example is described that following embodiment of the present invention deposits with the geographic element storage administration in the GIS-Geographic Information System.Those skilled in the art can know that technical scheme provided by the invention is applicable to other data information systems.
With reference to Fig. 1, a kind of Distributed Storage management method that the embodiment of the invention provides comprises the steps:
S101 makes up a plurality of databases that are distributed at least two servers, is used to store the geographic element object, and is respectively each database respective coding is set;
S102 for geographic element object to be stored is provided with identification code, is kept at said geographic element object in the constructed database, write down each geographic element object identification code, preserve the coding of the database of this geographic element object;
S103 sets up and preserves the corresponding relation that said identification code and said database are encoded.
Memory management method also comprises the step of from said database, obtaining the geographic element object:
S104 obtains the identification code of geographic element object to be found;
S05, the corresponding relation based on said identification code and said database coding extracts said geographic element object in target database.
With one of in said at least two servers as management server; This method also comprises:
Based on the identification code of said each geographic element object, the coding of database and the information of identification code tabulation of setting up object in the corresponding relation structure database;
Said information of identification code tabulation is kept in the management server.
The memory management method that provides among this embodiment also comprises:
Based on identification code, the database coding of said each geographic element object and the information of identification code tabulation of setting up object in the corresponding relation structure database;
Said information of identification code tabulation is kept at user terminal and real-time update.
For ease of the data-base capacity-enlarging in future, the identification code of the geographic element object of initial generation is expanded, obtain 2
nThe position binary code is as new identification code; N>=4, n is an integer.
The identification code that the identification code of said geographic element object is to use general unique identifier UUID mechanism to produce.
Among the step S101, the practical implementation process that makes up database is following:
1. prepare to store the database entity of geographic element object;
2. this database entity is generated a unique coding;
3. the coded message of registered database only writes down unique coding in this storehouse usually, can create a table separately and come record, also can be recorded in the identification information table with reference to the method that following the 4th step describes;
4. prepare unique identification sign indicating number information table, be used to store the corresponding ID of unique identification sign indicating number, have two fields at least, one is used to write down the unique identification sign indicating number, and one is used to write down the corresponding ID of this unique identification sign indicating number; Preparation will be stored the table of geographic element object, prepares in order to store data;
5. if there are a plurality of database entities to need to prepare, also promptly under distributed environment, need to prepare a plurality of database entities, then repeat the relevant preliminary work of 1 to 4 step completion database.
Among the step S102, for geographic element object to be stored is provided with identification code:
Adopt the unique identification sign indicating number to come geographic element object of unique identification in the present invention.This unique identification sign indicating number is just as a unique identification information of geographic element object or database; Nature will add a unique identification information in the time of database initialize or a key element Object Creation; Simultaneously, be stored in the database as a data unit.Under distributed environment; Especially under the environment of network environment and geography information mass data, the visit of data and transmission all nature contain this identification information, can increase the transmission quantity of data like this; If the UUID that uses 128 identifies an object; When obtaining 10000 geographic element objects, needing the minimum data amount of request is (128*2) * 10000 ≈ 156Kb, and this is many burden under a large amount of request condition.Therefore need register the identification information sign indicating number, during like n=5, data length is 2
5=32, promptly adopt the ID of 32 length, data request amount is about original 1/4th afterwards.Certainly, under this mode, the key element that storehouse can be stored at most to as if (about 2,100,000,000 records) of some restrictions arranged; In most cases can satisfy actual needs; Moreover, if in a storehouse data recording of storing excess, will produce certain influence to the performance of database.If data volume has exceeded this restriction then can adopt a plurality of database storing.
A) use universal mode to produce a unique identification sign indicating number, produce an identification code C1 as using the UUID mechanism;
B) registration identification code C1 in database; (prerequisite is also promptly in the identification code information table of database, to increase a data recording; An identification code information table is arranged) in database; At least write down the ID1 (for example, 32 integers can be by the mechanism of database automatic increase type major key) of identification code and this identification code in this tables of data;
Repeating step a), b), other identification information sign indicating number of registration in database.
Among the step S102, storage geographic element object and registering object identification information sign indicating number specifically comprise:
(1) when certain table that will be in database increases record, when promptly increasing a geographic element object, to produce a unique identification sign indicating number in advance, as the unique identification of this geographic element object;
(2) register the unique identification sign indicating number information of this geographic element object according to the flow process of first, and return the ID of this object;
(3) out of Memory of this object of increase in the table of certain in database is like spatial information and attribute information.The also natural ID that has had unique identification sign indicating number information generating of this object this moment;
(4), then repeat the operation of () to (three) if there is more key element object in database, to increase.
With reference to Fig. 2, among the step S104, in database, obtain the information of geographic element object, specifically comprise:
When geographic element object of needs acquisition request; Usually this request is (following in order to distinguish through the remote resource database; Be unified in client's angle, the database that operate is called " remote resource database ") the request that constitutes jointly of the unique identification sign indicating number of coding and geographic element object;
Unique identification sign indicating number through storehouse and key element object; (common in the client-side program operation at client's unique identification information index database respectively; Can set up a unique identification sign indicating number information index storehouse automatically and safeguard the unique identification sign indicating number information table in each database) the corresponding ID of middle retrieval unique identification sign indicating number; If exist, then directly return corresponding ID;
Concrete: the information below in the unique identification sign indicating number information index storehouse of client maintenance, needing to safeguard: (I) tabulation of remote resource database service; When client has been set up a remote resource database connection; Just in this tabulation, write down the unique identification sign indicating number of database and the sign ID of service, be similar to " registration of unique identification information sign indicating number " described in the second portion; (II) when client has been set up a remote resource database connection; In unique identification sign indicating number information index storehouse, also set up the unique identification sign indicating number information table of corresponding remote resource database, promptly the unique identification sign indicating number information table that writes down in this remote resource database has been done a mirror image;
Otherwise, and the ID that returns is registered in the corresponding Database Identification information table of client's unique identification information index database according to the directly ID of query elements object unique identification sign indicating number that is coded in the respective remote resource database of remote resource database;
When the ID of key element object has obtained, then request content is reorientated the request that service ID and key element object ID for the remote resource database constitute jointly; This moment the remote resource database service ID as the part of request, be to be to belong in which remote resource storehouse when returning for identification request.
Service ID through the remote resource database can directly navigate to the respective remote resource database with request; The i.e. deposit position of this key element object data resource; Can navigate to a certain line item in certain table of this remote resource database through the key element object ID simultaneously, thereby obtain the information of this key element object;
When a large amount of geographic elements need be asked, can repeat abovementioned steps and carry out obtaining of information, thereby the information resources of distributed objects are obtained solid foundation is provided.
With reference to Fig. 3, the embodiment of the invention also provides a kind of distributed information storage management system 300, comprising:
A plurality of databases 310 are distributed on two servers at least, are used to store the geographic element object, and each database is provided with respective coding;
The geographic element object of storing in the said database is provided with identification code, and said geographic element object information is kept in the constructed database;
Management server 320 is used to preserve the corresponding relation of the identification code of said each geographic element object, the database coding of preserving this geographic element object and identification code and said database coding, and is used for the response element query requests.
This storage management system 300 also comprises specifically comprising the reading device 330 of geographic element object:
Identification code query unit 330a is used to obtain the identification code of geographic element object to be found;
Extraction unit 330b, the corresponding relation based on said identification code and said database coding extracts said geographic element object in target database.
Be one of in said at least two servers wherein with said management server.
User terminal 340 is used for obtaining the geographic element object based on the identification code inquiry of geographic element object;
Preserve identification code, the database coding of geographic element object on this user terminal and set up correspondence relationship information, and the information synchronization on said management server is upgraded.
The invention provides a kind of storage scheme of distributed geographical element information newly, comprise that distributed data resource memory location is unique coding of database, the unique identification of distributed geographical key element object; Under based on conditions such as existing networks, the improvement to the unique identification information of storehouse and key element object has been proposed, the integer ID that promptly converts 32 into is as the basic information unit (BIU) of Network Transmission; Under environment based on distributed storage; Obtain manner to the geographic element object has been proposed; The unique identification that is storehouse and key element object is discerned distributed resource; The present invention has satisfied the multiduty GIS data management requirement of current opening, and especially this distributed information of geographic elements can be shared, and shows powerful support and vigor in actual use.
More than Distributed Storage method provided by the present invention and read method have been carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. a Distributed Storage management method is characterized in that, comprising:
Make up a plurality of databases that are distributed at least two servers, be used to store the key element object, and be respectively each database respective coding is set;
For key element object to be stored is provided with identification code, said key element object is kept in the constructed database, write down each key element object identification code, preserve the coding of the database of this key element object;
Set up and preserve the corresponding relation of said identification code and said database coding.
2. memory management method as claimed in claim 1 is characterized in that, also comprises the step of from said database, obtaining the key element object:
Obtain the identification code of key element object to be found;
Corresponding relation based on said identification code and said database coding extracts said key element object in target database.
3. memory management method as claimed in claim 1 is characterized in that, with one of in said at least two servers as management server; This method also comprises:
Based on the identification code of said each key element object, the coding of database and the information of identification code tabulation of setting up object in the corresponding relation structure database;
Said information of identification code tabulation is kept in the management server.
4. memory management method as claimed in claim 1 is characterized in that, also comprises:
Based on identification code, the database coding of said each key element object and the information of identification code tabulation of setting up object in the corresponding relation structure database;
Said information of identification code tabulation is kept at user terminal and real-time update.
5. memory management method as claimed in claim 1 is characterized in that, also comprises:
Identification code to the key element object of initial generation is expanded, and obtains 2
nThe position binary code is as new identification code; N>=4, n is an integer.
6. memory management method as claimed in claim 5 is characterized in that,
The identification code that the identification code of said key element object is to use general unique identifier UUID mechanism to produce.
7. like each described memory management method in the claim 1 to 6, it is characterized in that said key element is the geographic element in the GIS-Geographic Information System.
8. a distributed information storage management system is characterized in that, comprising:
A plurality of databases are distributed on two servers at least, are used to store the key element object, and each database is provided with respective coding;
The key element object of storing in the said database is provided with identification code, and said key element object information is kept in the constructed database;
Management server is used to preserve the corresponding relation of the identification code of said each key element object, the database coding of preserving this key element object and identification code and said database coding, and is used for the response element query requests.
9. storage management system as claimed in claim 8 is characterized in that, also comprises the reading device of key element object, specifically comprises:
The identification code query unit is used to obtain the identification code of key element object to be found;
Extraction unit, the corresponding relation based on said identification code and said database coding extracts said key element object in target database.
10. storage management system as claimed in claim 8 is characterized in that, is one of in said at least two servers with said management server.
11. storage management system as claimed in claim 8 also comprises:
User terminal is used for obtaining the key element object based on the identification code inquiry of key element object;
Preserve identification code, the database coding of key element object on the said user terminal and set up correspondence relationship information, and the information synchronization on said management server is upgraded.
12., it is characterized in that said key element is the geographic element in the GIS-Geographic Information System like each described storage management system in the claim 8 to 11.
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| CN103136340A (en) * | 2013-02-04 | 2013-06-05 | 北京大学 | Method for migrating massive spatial data in cluster fast |
| CN104281597A (en) * | 2013-07-05 | 2015-01-14 | 上海众恒信息产业股份有限公司 | Method for organizing three-dimensional geographic information data |
| CN106372115A (en) * | 2016-08-23 | 2017-02-01 | 成都乾威科技有限公司 | Data reading/writing method and system, and database system |
| WO2017190557A1 (en) * | 2016-05-06 | 2017-11-09 | 曲立东 | Object data association index system, and construction and application method for the system |
| CN109144979A (en) * | 2018-08-15 | 2019-01-04 | 中国建设银行股份有限公司 | A kind of data processing method and device based on distribution application system |
| CN109657021A (en) * | 2018-11-16 | 2019-04-19 | 北京呈观数据信息技术有限责任公司 | Infrastructure big data management method and infrastructure data managing device |
| CN111708808A (en) * | 2020-06-10 | 2020-09-25 | 中国建设银行股份有限公司 | Distributed service system and service summarizing and inquiring method, device and equipment thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103136340A (en) * | 2013-02-04 | 2013-06-05 | 北京大学 | Method for migrating massive spatial data in cluster fast |
| CN103136340B (en) * | 2013-02-04 | 2015-04-29 | 北京大学 | Method for migrating massive spatial data in cluster fast |
| CN104281597A (en) * | 2013-07-05 | 2015-01-14 | 上海众恒信息产业股份有限公司 | Method for organizing three-dimensional geographic information data |
| WO2017190557A1 (en) * | 2016-05-06 | 2017-11-09 | 曲立东 | Object data association index system, and construction and application method for the system |
| CN106372115A (en) * | 2016-08-23 | 2017-02-01 | 成都乾威科技有限公司 | Data reading/writing method and system, and database system |
| CN109144979A (en) * | 2018-08-15 | 2019-01-04 | 中国建设银行股份有限公司 | A kind of data processing method and device based on distribution application system |
| CN109657021A (en) * | 2018-11-16 | 2019-04-19 | 北京呈观数据信息技术有限责任公司 | Infrastructure big data management method and infrastructure data managing device |
| CN111708808A (en) * | 2020-06-10 | 2020-09-25 | 中国建设银行股份有限公司 | Distributed service system and service summarizing and inquiring method, device and equipment thereof |
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Application publication date: 20120718 |