CN116975076A - Multi-terminal interactive data transmission control method and system - Google Patents
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- 230000002452 interceptive effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001360 synchronised effect Effects 0.000 claims abstract description 23
- 230000004044 response Effects 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims description 27
- 230000009471 action Effects 0.000 claims description 12
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
- G06F16/2308—Concurrency control
- G06F16/2336—Pessimistic concurrency control approaches, e.g. locking or multiple versions without time stamps
- G06F16/2343—Locking methods, e.g. distributed locking or locking implementation details
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
- G06F16/2358—Change logging, detection, and notification
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
- G06F16/2379—Updates performed during online database operations; commit processing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
Abstract
The application relates to the field of data interaction and discloses a data transmission control method and a system for multi-terminal interaction, wherein the method comprises a terminal object judging module, a terminal request response module, a request queue processing module and a data processing transmission module; in the data management group used for the multi-terminal equipment, the read-write operation management of the multi-terminal equipment on the same data object can be realized, the orderly and multi-terminal real-time synchronous data read-write control is realized, different requesters can independently correspond to the data copies through the structural arrangement of the multi-data copies, and further, when the data write operation queue is carried out, the independent locking of the corresponding data segment areas can be realized conveniently, so that the writing and changing of the data by a single user are limited, the real-time synchronization of the changing is realized through the synchronous updating of the plurality of data copies, and the data transmission and interactive experience of the multi-terminal can be effectively improved.
Description
Technical Field
The application relates to the field of data interaction, in particular to a data transmission control method and system for multi-terminal interaction.
Background
In the field of data interaction transmission, real-time synchronization of data in a library is very important, especially when a plurality of terminals jointly perform collaborative reading and writing of the same data, the collaborative reading and writing of the plurality of terminals and the management of the read and written data and the processing synchronization of the content are performed, and the real-time synchronization is very important for interaction experience and work progress of the plurality of terminals.
In the prior art, the operation of reading and writing data by a terminal is mostly performed by adopting a mode of reading data in a library and feeding the data back to the library after editing, which causes the problem that the data are updated in real time when the terminals cooperate and the data cannot be synchronously edited by the terminals together, so that the data management of the cooperation of the terminals cannot be performed effectively and stably.
Disclosure of Invention
The application aims to provide a multi-terminal interactive data transmission control method and system, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions:
a multi-terminal interactive data transmission control system, comprising:
the terminal object judging module is used for acquiring the identification information of the terminal equipment requesting access, carrying out identity security judgment on the identification information and executing access response actions based on the judgment result, wherein the identification information comprises equipment information and user information, and the access response actions comprise access permission and access refusal;
the terminal request response module is used for acquiring a data read-write request of the accessed terminal equipment, acquiring a corresponding data object based on the data read-write request, and establishing a data copy of the data object, wherein the data copy corresponds to the terminal equipment one by one and is stored in a corresponding mark;
the request queue processing module is used for responding to the data read-write request, acquiring write request areas of a plurality of terminal devices for the data copy, queuing a plurality of terminal devices in the same write request area, responding to the data write request in sequence based on the queues, and simultaneously responding to only one data write request in the same write request area;
and the data processing transmission module is used for linking a plurality of data copies, synchronizing the writing request area, acquiring writing operation contents of the data writing request on the writing request area, and synchronously updating the plurality of data copies in real time.
As a further aspect of the application: the data processing and transmitting module specifically comprises:
the copy link unit is used for establishing state synchronous links of a plurality of data copies, wherein the state synchronous links are used for synchronizing state information and update information of the plurality of data copies and representing operation content associated with a writing request area;
and the copy synchronization module is used for acquiring a plurality of write request areas and data write requests corresponding to the write request areas, synchronizing the data write requests on a plurality of data copies, and correspondingly locking the write permission of the data copy write request areas if the corresponding terminal equipment sends out objects other than the data write requests.
As still further aspects of the application: the system also comprises a copy processing module, wherein the copy processing module specifically comprises:
the copy storage unit is used for updating and storing the data copy and the content change of the data copy in response to the data writing request in real time so as to acquire a copy data record;
and the updating recording unit is used for acquiring the data writing request responded by the repeated change of the data copy and the terminal equipment corresponding to the data writing request, and recording and storing based on the execution sequence and time relation of the data writing request so as to generate a copy updating record.
As still further aspects of the application: the system also comprises a data backtracking module;
the data backtracking module is used for linking the copy update record and the copy data record, the copy update record comprises a plurality of data write request records, the data write request records are correspondingly provided with backtracking links, the backtracking links are used for correspondingly linking the copy data record, and when the backtracking links are triggered, the copy data record corresponds to the change content of the data write request and the data content of the copy data during the change.
As still further aspects of the application: the system also comprises a right management module;
the permission management module is used for queuing data write requests of a plurality of terminal devices in the same write request area based on permission levels of the terminal devices, the permission levels comprise copy management levels, the copy management levels represent highest management permission levels of the data objects, and copy management level users and the terminal devices are used for managing update synchronization contents of authenticated data copies on the data objects.
The embodiment of the application aims to provide a multi-terminal interactive data transmission control method, which comprises the following steps:
acquiring identification information of terminal equipment requesting access, carrying out identity security judgment on the identification information, and executing access response actions based on a judgment result, wherein the identification information comprises equipment information and user information, and the access response actions comprise access permission and access refusal;
acquiring a data read-write request of an accessed terminal device, acquiring a corresponding data object based on the data read-write request, and establishing a data copy of the data object, wherein the data copy corresponds to the terminal device one by one and is stored in a corresponding mark;
responding to a data read-write request, acquiring a write request area of a plurality of terminal devices for the data copy, queuing a plurality of terminal devices in the same write request area, and sequentially responding to the data write request based on the queues, wherein the same write request area only responds to a unique data write request at the same time;
and linking a plurality of data copies, synchronizing the writing request area, acquiring writing operation content of the data writing request to the writing request area, and synchronously updating the plurality of data copies in real time.
As a further aspect of the application: the method also comprises the steps of:
establishing state synchronous links of a plurality of data copies, wherein the state synchronous links are used for synchronizing state information and update information of the plurality of data copies and representing operation content associated with a writing request area;
and acquiring a plurality of write request areas and data write requests corresponding to the write request areas, synchronizing the data write requests in a plurality of data copies, and correspondingly locking the write permission of the data copy write request areas if the corresponding terminal equipment sends out an object instead of the data write requests.
As still further aspects of the application: the method also comprises the steps of:
updating and storing the data copy and the content change of the data copy in response to the data writing request in real time to obtain a copy data record;
and acquiring the data writing request responded by the repeated change of the data copy and the terminal equipment corresponding to the data writing request, and recording and storing based on the execution sequence and time relation of the data writing request so as to generate a copy update record.
As still further aspects of the application: the method also comprises the steps of:
and linking the copy update record and the copy data record, wherein the copy update record comprises a plurality of data write request records, the data write request records are correspondingly provided with backtracking links, the backtracking links are used for correspondingly linking with the copy data records, and when the backtracking links are triggered, the change content of the copy data record corresponding to the data write request and the data content of the copy data during the change are output.
As still further aspects of the application: the method also comprises the steps of:
and queuing the data write requests of a plurality of terminal devices in the same write request area based on the authority level of the terminal devices, wherein the authority level comprises a copy management level, the copy management level represents the highest management authority level of the data object, and a copy management level user and the terminal devices are used for managing and authenticating the update synchronous content of the data object by the data copy.
Compared with the prior art, the application has the beneficial effects that: in the data management group used for the multi-terminal equipment, the read-write operation management of the multi-terminal equipment on the same data object can be realized, the orderly and multi-terminal real-time synchronous data read-write control is realized, different requesters can independently correspond to the data copies through the structural arrangement of the multi-data copies, and further, when the data write operation queue is carried out, the independent locking of the corresponding data segment areas can be realized conveniently, so that the writing and changing of the data by a single user are limited, the real-time synchronization of the changing is realized through the synchronous updating of the plurality of data copies, and the data transmission and interactive experience of the multi-terminal can be effectively improved.
Drawings
Fig. 1 is a block diagram of a multi-terminal interactive data transmission control system.
Fig. 2 is a block diagram illustrating a data processing and transmitting module in a multi-terminal interactive data transmission control system.
Fig. 3 is a block diagram of a copy processing module in a multi-terminal interactive data transmission control system.
Fig. 4 is a flow chart of a multi-terminal interactive data transmission control method.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Specific implementations of the application are described in detail below in connection with specific embodiments.
As shown in fig. 1, a multi-terminal interactive data transmission control system according to an embodiment of the present application includes:
the terminal object determining module 100 is configured to obtain identification information of a terminal device requesting access, perform identity security determination on the identification information, and perform an access response action based on a determination result, where the identification information includes device information and user information, and the access response action includes allowing access and rejecting access.
The terminal request response module 300 is configured to obtain a data read-write request of an accessed terminal device, obtain a corresponding data object based on the data read-write request, and establish a data copy of the data object, where the data copy corresponds to the terminal device one by one, and corresponds to the tag for storage.
The request queue processing module 500 is configured to respond to a data read-write request, obtain write request areas of multiple terminal devices for the data copies, queue multiple terminal devices in the same write request area, and respond to the data write request sequentially based on the queues, where the same write request area responds to only one data write request at the same time.
The data processing and transmitting module 700 is configured to link a plurality of data copies, synchronize the write request area, acquire write operation content of the write request of the data write request to the write request area, and synchronously update the plurality of data copies in real time.
In this embodiment, a multi-terminal interactive data transmission control system is provided, which is used in a data management group of a multi-terminal device, and can implement read-write operation management of the multi-terminal device on the same data object, implement orderly and multi-terminal real-time synchronous data read-write control, and through the structural arrangement of multiple data copies, different requesters can independently correspond to the data copies, so that when a data write operation queue is performed, the corresponding data segment area can be conveniently and independently locked, so as to limit the realization of writing and changing of data by a single user, and the real-time synchronization of changing can be implemented through synchronous updating of multiple data copies, thereby effectively improving the data transmission and interactive experience of the multiple terminals; specifically, the system is structured such that a single data center is correspondingly connected to a plurality of terminal devices, when the terminal devices are connected, identity authentication and identification are performed on the terminal devices, connection is established, corresponding data copies are established for each terminal device, and data synchronization is performed on the plurality of data copies, when a certain data copy is edited, other data copies update synchronous editing contents simultaneously, in order to avoid confusion of data contents caused by simultaneous editing of the same contents of the data copies by the plurality of terminal devices, for example, the terminal device a sends out a modification instruction (data writing instruction) for the data, and an execution area is an area a (which can be set as a display content area of the terminal device a when the terminal device a executes the modification instruction in actual use), then the other terminal devices cannot edit the area a of the data copy within the time period, and can edit the area of the part after the terminal device a finishes modification of the data contents.
As shown in fig. 2, as another preferred embodiment of the present application, the data processing transmission module 700 specifically includes:
the copy linking unit 701 is configured to establish state synchronization links of the plurality of data copies, where the state synchronization links are configured to synchronize state information and update information of the plurality of data copies, and characterize operation content associated with a write request area.
And the copy synchronization module 702 is configured to obtain a plurality of write request areas and data write requests corresponding to the write request areas, synchronize the data write requests among a plurality of data copies, and if an object is sent out by a corresponding terminal device other than the data write requests, correspondingly lock write rights of the data copy write request areas.
In this embodiment, the data processing and transmitting module 700 is used for synchronizing the content and the change of the multiple data copies, specifically, for synchronously binding the multiple data copies, when the data copy a is written, the corresponding change of the data content will be synchronized at the data copy B end, so that the effect of reading and writing the same data by multiple terminal devices can be achieved while using the data copies.
As shown in fig. 3, as another preferred embodiment of the present application, the copy processing module 900 further includes a copy processing module 900 specifically:
and the copy storage unit 901 is configured to update and store the data copy and a content change of the data copy in response to the data write request in real time, so as to obtain a copy data record.
And the update recording unit 902 is configured to obtain a data write request to which the multiple changes of the data copy are responsive and a terminal device corresponding to the data write request, and record and store based on an execution sequence and a time relationship of the data write request, so as to generate a copy update record.
In this embodiment, the copy processing module 900 is used to record a corresponding data copy for each terminal device, in this way, the read-write request of each terminal device is effectively recorded, and in the subsequent backtracking, it can be conveniently understood that the corresponding content change is generated by editing one or more terminal devices sequentially, and the copy update records are specifically recorded in one-to-one sequence according to the modified time sequence of the data (here, for the same data segment, different data segments are stored in parallel).
As another preferred embodiment of the present application, the system further comprises a data backtracking module;
the data backtracking module is used for linking the copy update record and the copy data record, the copy update record comprises a plurality of data write request records, the data write request records are correspondingly provided with backtracking links, the backtracking links are used for correspondingly linking the copy data record, and when the backtracking links are triggered, the copy data record corresponds to the change content of the data write request and the data content of the copy data during the change.
Further, the system also comprises a right management module;
the permission management module is used for queuing data write requests of a plurality of terminal devices in the same write request area based on permission levels of the terminal devices, the permission levels comprise copy management levels, the copy management levels represent highest management permission levels of the data objects, and copy management level users and the terminal devices are used for managing update synchronization contents of authenticated data copies on the data objects.
In this embodiment, the function of the data backtracking module is to perform a backtracking process and an operable manner on the recorded content of the copy data, especially when the authorized user judges the changed content of the copy data, the corresponding copy data content in the corresponding change step can be obtained through the backtracking link, which can be understood as the copy data mask corresponding to the subsequent step, and the data backtracking module returns to the previous step, so that it is convenient for the manager to judge the content and determine the reserved content of the copy data for updating the data object.
As shown in fig. 4, the present application further provides a multi-terminal interactive data transmission control method, which includes the steps of:
s200, acquiring identification information of terminal equipment requesting access, carrying out identity security judgment on the identification information, and executing access response actions based on a judgment result, wherein the identification information comprises equipment information and user information, and the access response actions comprise access permission and access rejection.
S400, acquiring a data read-write request of the accessed terminal equipment, acquiring a corresponding data object based on the data read-write request, and establishing a data copy of the data object, wherein the data copy corresponds to the terminal equipment one by one and is stored in a corresponding mark.
S600, responding to a data read-write request, acquiring write request areas of a plurality of terminal devices for the data copy, queuing the plurality of terminal devices in the same write request area, and responding to the data write request in sequence based on the queues, wherein the same write request area only responds to a unique data write request at the same time.
S800, linking a plurality of data copies, synchronizing the writing request area, acquiring writing operation content of the data writing request to the writing request area, and synchronously updating the plurality of data copies in real time.
As another preferred embodiment of the present application, further comprising the steps of:
and establishing state synchronous links of the plurality of data copies, wherein the state synchronous links are used for synchronizing state information and update information of the plurality of data copies and representing operation content associated with a writing request area.
And acquiring a plurality of write request areas and data write requests corresponding to the write request areas, synchronizing the data write requests in a plurality of data copies, and correspondingly locking the write permission of the data copy write request areas if the corresponding terminal equipment sends out an object instead of the data write requests.
As another preferred embodiment of the present application, further comprising the steps of:
and updating and storing the data copy and the content change of the data copy responding to the data writing request in real time to obtain a copy data record.
And acquiring the data writing request responded by the repeated change of the data copy and the terminal equipment corresponding to the data writing request, and recording and storing based on the execution sequence and time relation of the data writing request so as to generate a copy update record.
As another preferred embodiment of the present application, further comprising the steps of:
and linking the copy update record and the copy data record, wherein the copy update record comprises a plurality of data write request records, the data write request records are correspondingly provided with backtracking links, the backtracking links are used for correspondingly linking with the copy data records, and when the backtracking links are triggered, the change content of the copy data record corresponding to the data write request and the data content of the copy data during the change are output.
As another preferred embodiment of the present application, further comprising the steps of:
and queuing the data write requests of a plurality of terminal devices in the same write request area based on the authority level of the terminal devices, wherein the authority level comprises a copy management level, the copy management level represents the highest management authority level of the data object, and a copy management level user and the terminal devices are used for managing and authenticating the update synchronous content of the data object by the data copy.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A multi-terminal interactive data transmission control system, comprising:
the terminal object judging module is used for acquiring the identification information of the terminal equipment requesting access, carrying out identity security judgment on the identification information and executing access response actions based on the judgment result, wherein the identification information comprises equipment information and user information, and the access response actions comprise access permission and access refusal;
the terminal request response module is used for acquiring a data read-write request of the accessed terminal equipment, acquiring a corresponding data object based on the data read-write request, and establishing a data copy of the data object, wherein the data copy corresponds to the terminal equipment one by one and is stored in a corresponding mark;
the request queue processing module is used for responding to the data read-write request, acquiring write request areas of a plurality of terminal devices for the data copy, queuing a plurality of terminal devices in the same write request area, responding to the data write request in sequence based on the queues, and simultaneously responding to only one data write request in the same write request area;
and the data processing transmission module is used for linking a plurality of data copies, synchronizing the writing request area, acquiring writing operation contents of the data writing request on the writing request area, and synchronously updating the plurality of data copies in real time.
2. The multi-terminal interactive data transmission control system according to claim 1, wherein the data processing transmission module specifically comprises:
the copy link unit is used for establishing state synchronous links of a plurality of data copies, wherein the state synchronous links are used for synchronizing state information and update information of the plurality of data copies and representing operation content associated with a writing request area;
and the copy synchronization module is used for acquiring a plurality of write request areas and data write requests corresponding to the write request areas, synchronizing the data write requests on a plurality of data copies, and correspondingly locking the write permission of the data copy write request areas if the corresponding terminal equipment sends out objects other than the data write requests.
3. The multi-terminal interactive data transmission control system according to claim 2, further comprising a copy processing module, wherein the copy processing module specifically comprises:
the copy storage unit is used for updating and storing the data copy and the content change of the data copy in response to the data writing request in real time so as to acquire a copy data record;
and the updating recording unit is used for acquiring the data writing request responded by the repeated change of the data copy and the terminal equipment corresponding to the data writing request, and recording and storing based on the execution sequence and time relation of the data writing request so as to generate a copy updating record.
4. A multi-terminal interactive data transmission control system according to claim 3, further comprising a data backtracking module;
the data backtracking module is used for linking the copy update record and the copy data record, the copy update record comprises a plurality of data write request records, the data write request records are correspondingly provided with backtracking links, the backtracking links are used for correspondingly linking the copy data record, and when the backtracking links are triggered, the copy data record corresponds to the change content of the data write request and the data content of the copy data during the change.
5. The multi-terminal interactive data transmission control system according to claim 4, further comprising a rights management module;
the permission management module is used for queuing data write requests of a plurality of terminal devices in the same write request area based on permission levels of the terminal devices, the permission levels comprise copy management levels, the copy management levels represent highest management permission levels of the data objects, and copy management level users and the terminal devices are used for managing update synchronization contents of authenticated data copies on the data objects.
6. A multi-terminal interactive data transmission control method, comprising:
acquiring identification information of terminal equipment requesting access, carrying out identity security judgment on the identification information, and executing access response actions based on a judgment result, wherein the identification information comprises equipment information and user information, and the access response actions comprise access permission and access refusal;
acquiring a data read-write request of an accessed terminal device, acquiring a corresponding data object based on the data read-write request, and establishing a data copy of the data object, wherein the data copy corresponds to the terminal device one by one and is stored in a corresponding mark;
responding to a data read-write request, acquiring a write request area of a plurality of terminal devices for the data copy, queuing a plurality of terminal devices in the same write request area, and sequentially responding to the data write request based on the queues, wherein the same write request area only responds to a unique data write request at the same time;
and linking a plurality of data copies, synchronizing the writing request area, acquiring writing operation content of the data writing request to the writing request area, and synchronously updating the plurality of data copies in real time.
7. The multi-terminal interactive data transmission control method according to claim 6, further comprising the steps of:
establishing state synchronous links of a plurality of data copies, wherein the state synchronous links are used for synchronizing state information and update information of the plurality of data copies and representing operation content associated with a writing request area;
and acquiring a plurality of write request areas and data write requests corresponding to the write request areas, synchronizing the data write requests in a plurality of data copies, and correspondingly locking the write permission of the data copy write request areas if the corresponding terminal equipment sends out an object instead of the data write requests.
8. The multi-terminal interactive data transmission control method according to claim 7, further comprising the step of:
updating and storing the data copy and the content change of the data copy in response to the data writing request in real time to obtain a copy data record;
and acquiring the data writing request responded by the repeated change of the data copy and the terminal equipment corresponding to the data writing request, and recording and storing based on the execution sequence and time relation of the data writing request so as to generate a copy update record.
9. The multi-terminal interactive data transmission control method according to claim 8, further comprising the step of:
and linking the copy update record and the copy data record, wherein the copy update record comprises a plurality of data write request records, the data write request records are correspondingly provided with backtracking links, the backtracking links are used for correspondingly linking with the copy data records, and when the backtracking links are triggered, the change content of the copy data record corresponding to the data write request and the data content of the copy data during the change are output.
10. The multi-terminal interactive data transmission control method according to claim 9, further comprising the step of:
and queuing the data write requests of a plurality of terminal devices in the same write request area based on the authority level of the terminal devices, wherein the authority level comprises a copy management level, the copy management level represents the highest management authority level of the data object, and a copy management level user and the terminal devices are used for managing and authenticating the update synchronous content of the data object by the data copy.
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