JP4367643B2 - Data storage system, data storage method, and data storage program - Google Patents

Description

  The present invention relates to a data storage system, a data storage method, and a data storage program.

  Long-term storage systems are used in devices for long-term storage of electronic data. A conventional long-term storage system shapes electronic data decided to be stored for a long time into a specific input format and stores it in a predetermined storage location.

  However, this conventional technique has the following problems.

  The first problem is that electronic data that is not stored for a long time cannot be stored. This is because the conventional long-term storage system does not consider any data that is not stored for a long time. For this reason, it cannot be used as a storage for storing all electronic data in an integrated manner.

  The second problem is that electronic data other than a specific format cannot be stored. The reason is the same as the reason for the first problem.

  The third problem is that the storage destination cannot be changed depending on the importance of the electronic data to be stored. The reason is that no consideration is given to the fact that there is data of different importance in the stored data. For this reason, since it becomes a storage device having a performance matched to the most important data, a waste of cost occurs when storing data with low importance.

In addition, as a technique relevant to the conventional long-term storage system, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2002-183055), Patent Document 2 (Japanese Patent Laid-Open No. 6-103123), and Patent Document 3 (Japanese Patent Laid-Open No. Hei 8- 139747).
JP 2002-183055 A JP-A-6-103123 JP-A-8-139747

  As described above, in the conventional long-term storage system, only electronic data determined to be stored for a long period of time in advance is handled, so that it cannot be used as an integrated storage for all electronic documents.

  In addition, because the storage location of electronic data was fixed, the electronic data of low importance was stored together with the storage location of the robustness that matches the most important electronic data. There was a waste of cost.

  INDUSTRIAL APPLICABILITY The present invention can be used as an integrated storage for all electronic documents, and a data storage system, a data storage method, and a data storage system capable of preventing waste of cost for storage capacity and robustness. The object is to provide a data storage program.

In order to achieve the above object, the invention described in claim 1 includes a user storage means for storing information on the importance according to the signer of the electronic signature and the necessity of long-term storage, and an input device. the digital signature to the electronic data to determine whether or not granted from the need for the user storage means searched and the corresponding to that signer severity and long-term storage when said electronic signature is attached First acquisition means for acquiring information on the presence / absence of sex, and keyword storage means for storing keywords to be searched from the electronic data, importance corresponding to the keywords, and information on the necessity of long-term storage; , the key to search the keyword storage means when the keyword stored in the storage means determines whether the keyword is included are the keywords are included in the electronic data Important corresponding second acquiring means for acquiring the information on the presence or absence of the necessity of severity and long-term storage corresponding to over-de, the said signer acquired by the first and second acquisition means keywords based on the degree and the need for the presence of information for long-term storage, and data storage means for storing the electronic data storage device in accordance with the information of the presence or absence of necessity of the severity and long-term storage, that has a It is a feature.

Further, an invention according to claim 2, in the data storage system of claim 1, wherein the data storage means, when there is a need for long-term storage, converting the electronic data to the long-term storage format It is characterized by.

The invention according to claim 3 is the data storage system according to claim 1 or 2 , wherein the data storage means determines whether the signer and the degree of importance corresponding to the keyword and the necessity of long-term storage are present. It is characterized by storing the electronic data on the cost storage devices in accordance with the information.

The invention according to claim 4, the first acquisition unit, determines whether the electronic signature to the electronic data from the input device is given, the digital signature when the electronic signature is attached searches the user storage means for storing the importance information of the presence or absence of the need for long-term storage in response to the signer, acquires information on the presence or absence of the importance and need for long-term storage corresponding to the signer A keyword that stores, in the electronic data, a keyword to be searched for , a degree of importance according to the keyword, and information on the necessity of long-term storage by the first acquisition step and the second acquisition means determines whether the keyword stored in the storage unit is included, wherein when the keyword is included chromatic severity the need for long-term storage corresponding to the keyword by searching the keyword storage means Of a second acquisition step of acquiring information, the data storage means, said first and whether it is necessary severity and long-term storage that has been with the signer obtained in the second obtaining step corresponding to the keyword based on the information, it is characterized in that it comprises the the severity and long-term storage data storage step of storing said electronic data storage device in response to the presence or absence of the information needs of the.

Further, an invention according to claim 5, in the data storing method according to claim 4, in the data storage step, when there is a need for long-term storage, converting the electronic data to the long-term storage format It is characterized by.

The invention according to claim 6 is the data storage method according to claim 4 or 5 , wherein, in the data storage step, the importance level corresponding to the signer and the keyword and the necessity of long-term storage are determined. It is characterized by storing the electronic data on the cost storage devices in accordance with the information.

The invention described in Claim 7, the computer determines whether or not the electronic signature to the electronic data from the input device is given, depending on the signer's digital signature when the electronic signature is attached It was severity and presence or absence of the need for long-term storage information searches the user storage means for storing the first to get information on the presence or absence of the importance and need for long-term storage corresponding to the signer The keyword stored in the keyword storage means storing the keyword to be searched and the importance according to the keyword and the necessity of long-term storage is included in the acquisition means and the electronic data and it is judged whether or not the have the second acquisition for acquiring information on the presence or absence of the importance and need for long-term storage corresponding to the keyword by searching the keyword storage means when the keyword is included Stage and, based on the first and the signer information of the presence or absence of the need for the appropriate severity and long-term storage in the keyword obtained by the second acquisition unit, the need for the severity and long-term storage a data storage means for storing the electronic data storage device in response to the presence or absence of information, it is characterized in that to function with.

  According to the present invention, it can be used as an integrated storage for all electronic documents, and there is an effect that it is possible to prevent waste of cost for the capacity and robustness of the storage destination.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In the present invention, when the electronic data is stored, the user does not specify whether to store the electronic data for a long time, but rather determines the importance of the electronic data, and automatically converts it into a long-term storage format and stores it. . As for the storage destination of the electronic data, an appropriate storage destination is automatically selected and stored according to the importance of the electronic data from a plurality of storage destinations having different robustness and cost.

  FIG. 1 is a diagram showing a configuration example of a data storage system of the present invention. The data storage system of FIG. 1 includes an input device 1 such as a magnetic disk or a floppy disk, a data processing device 2 that operates under program control, a storage device 3 that stores information, and a long-term storage that converts a storage format of electronic data. It has a format conversion device 4 and a storage device 5 such as a magnetic disk for storing electronic data.

  Here, the storage device 3 includes a user storage unit 31, a keyword storage unit 32, and an importance classification storage unit 33.

  The user storage unit 31 stores in advance information on job titles and authorities, respective importance points, and the necessity of long-term storage, using the name of the signer who gives the electronic signature as a key.

  The keyword storage unit 32 stores in advance keywords used for important documents, respective importance points, and the necessity of long-term storage. Examples of keywords include “inside secret”, “maru secret”, “confidential”, “confidential”, “copy prohibited”, “receipt”, “minutes”, “invoice”, “order”, and the like.

  Further, the importance level classification storage unit 33 stores in advance whether the data is converted into the long-term storage format, and in which storage device the importance level points are stored.

  The storage device 5 includes a low-performance storage device 51, a high-performance storage device 52, a tamper-resistant low-performance storage device 53, and a tamper-resistant high-performance storage device 54. ing.

  Here, the low-performance storage device 51 is a storage device that does not have a high access speed and does not have a redundant function but has a low unit capacity.

  Further, the high-performance storage device 52 is a storage device with a high access speed, a high reliability, a redundant function, and an expensive unit capacity.

  In addition, the low-performance storage device 53 having tamper resistance has special physical characteristics such that it cannot be accessed without passing through a special API and is physically broken if information is read by a method that is not a regular means. It is a storage device that is not so fast in access speed and does not have a redundant function, but has a somewhat expensive unit capacity.

  Further, the high-performance storage device 54 having tamper resistance has special physical characteristics such that it cannot be accessed without passing through a special API and is physically broken if information is read by a method that is not authorized. It is a highly reliable storage device with high access speed, high reliability, and redundancy function.

  The long-term storage format conversion device 4 has a function of communicating with a time stamp station and acquiring a time stamp, and the acquired time stamp can be embedded in the long-term storage format.

  Further, the data processing device 2 includes a signature determination unit 21, a data analysis unit 22, and an importance level determination unit 23.

  Here, the signature determination unit 21 checks whether or not an electronic signature is given to the electronic data given from the input device 1. If the electronic signature is given, it is stored in the user storage unit 31. Information is retrieved to obtain the importance points for the signer and the necessity of long-term storage.

  In addition, the data analysis unit 22 performs a full text search of the electronic data, searches whether the keyword stored in the keyword storage unit 32 is included in the electronic data, and requires importance points regarding keywords and long-term storage. Get the presence or absence of sex.

  Also, the importance level determination unit 23 determines whether or not to convert the input electronic data into a long-term storage format based on the information on the necessity of long-term storage obtained from the signature determination unit 21 and the data analysis unit 22. Is converted to the long-term storage format, the electronic data is transferred to the long-term storage format conversion unit 4 and the electronic data converted into the long-term storage format is received. The importance determination means 23 further determines the storage destination of the electronic data based on the importance point information and whether or not the data has been converted into the long-term storage format, and the low-performance storage device 51, the high-performance storage device 52, Electronic data is stored in either a low-performance storage device 53 having tampering properties or a high-performance storage device 54 having tamper resistance.

  FIG. 2 is a flowchart showing a processing flow of the data storage system of FIG.

  Referring to FIG. 2, the electronic data given from the input device 1 is transferred to the signature judgment unit 21, and the signature judgment unit 21 checks whether or not an electronic signature is given to the given electronic data ( Step A1). If the electronic signature is not given, the importance point of the electronic data is not added (step A2). If an electronic signature is given, it is checked whether the signer of the electronic signature is stored in the user recording unit 31 (step A3).

  When the signer's data does not exist in the user recording unit 31, the importance point of the electronic data is not added (step A4). When the signer information is stored in the user recording unit 31, the importance point of the signer is acquired from the user recording unit 31 and added (step A5). Specifically, as shown in FIG. 3, when the signer is C, the importance point is 510, and when the signer is H, the importance point is 100.

  Further, the signer is checked for the necessity of long-term storage (step A6), and if necessary, the long-term storage flag is turned on (step A8).

  Next, the data analysis unit 22 performs a search to determine whether the keyword stored in the keyword storage unit 32 is included in the electronic data (step A9). If the keyword stored in the keyword storage unit 32 is not included in the electronic data, the importance point is not added (step A10).

  If the keyword stored in the keyword storage unit 32 is included in the electronic data, the importance point corresponding to the keyword is added (step A11). Specifically, as shown in FIG. 4, when the keyword is “confidential”, the importance point is added by 50, and when the keyword is “receipt”, the importance point is added by 500. The

  Further, it is checked whether or not the keyword needs to be stored for a long time (step A12). If there is a need, the long-term storage flag is turned on (step A14).

  It is checked whether all the keywords stored in the keyword storage unit 32 have been searched (step A15). If there are still remaining keywords, the next keyword is searched (step A16).

  Next, based on the state of the long-term storage flag obtained from the signature determination unit 21 and the data analysis unit 22, the importance level determination unit 23 passes the electronic data to the long-term storage format conversion device 4 and stores the electronic data for a long time. Convert to format. Specifically, when the long-term storage flag is on, conversion to the long-term storage format is performed.

  The importance determination means 23 further determines which storage device to store based on the long-term storage flag and importance point information, and stores the electronic data in an appropriate storage device. Specifically, as shown in FIG. 5, when the long-term storage flag is off and the importance point is 0 to 1000, it is stored in a low-performance storage device, and the long-term preservation flag is off and the importance point is 1000 or more. If it is stored in a high-performance storage device and the long-term storage flag is on and the importance point is 0 to 1000, it is stored in a low-performance storage device with tamper resistance and the long-term storage flag is on. When the importance point is 1000 or more, it is stored in a high-performance storage device having tamper resistance.

  The first effect of the present invention is that it is automatically converted into a long-term storage format if it is judged necessary even if the user does not consciously specify it. As a result, the operability of the system is improved and the burden on the user can be reduced. Also, there is no need to forget to convert to long-term storage format when long-term storage is required.

  This is because the system automatically determines and converts an appropriate format based on the necessity information for long-term storage.

  The second effect is to accept all electronic data in a unified manner regardless of the presence / absence of an electronic signature and whether it is in a long-term storage format. As a result, the flexibility of the system is improved and the burden during system operation can be reduced.

  In addition, it is possible to use as an integrated storage for all electronic documents, not a storage dedicated for long-term storage.

  The reason is that it is not necessary to format the electronic data input to the system into a specific format, so that any electronic data can be accepted flexibly.

  The third effect is that electronic data is automatically stored in a storage device having appropriate cost and robustness even if the user does not specify it consciously. As a result, the operability of the system is improved and the burden on the user can be reduced.

  Further, since the cost is stored in a storage device corresponding to the importance of the electronic data, the overall cost can be reduced.

  This is because the system automatically determines and stores an appropriate storage device based on importance point information of electronic data.

  As described above, the data storage system according to the present invention includes the signature determination unit, the data analysis unit, and the importance level determination unit.

  The signature determination unit, the data analysis unit, and the importance level determination unit can be realized by hardware, but can also be realized by the computer reading a program for causing the computer to function as these parts and executing it. can do.

  The data storage method according to the present invention described with reference to FIGS. 1 and 2 can be realized by hardware, but the computer reads a program for causing the computer to perform this method from a recording medium and executes the program. Can also be realized.

It is a figure which shows the structural example of the data storage system of this invention. It is a flowchart which shows the flow of a process of the data storage system of FIG. It is a figure for demonstrating the process of the data storage system of this invention. It is a figure for demonstrating the process of the data storage system of this invention. It is a figure for demonstrating the process of the data storage system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Input device 2 Data processing device 3 Storage device 4 Long-term storage format conversion device 5 Storage device 21 Signature determination means 22 Data analysis means 23 Importance determination means 31 User storage part 32 Keyword storage part 33 Importance fraction storage part 51 Low performance Storage device 52 High-performance storage device 53 Damper-resistant storage device 54 Damper-resistant storage device

Claims (7)

User storage means for storing information on the importance according to the signer of the electronic signature and the necessity of long-term storage;
It determines whether or not the electronic data from the input device wherein the electronic signature is attached, long-term storage and severity corresponding to the signer by searching the user storage means when said electronic signature is attached First acquisition means for acquiring information on the necessity of
Keyword storage means for storing keywords to be searched from the electronic data, importance according to the keywords, and information on the necessity of long-term storage;
The keyword is determined whether contains keywords stored in the storage means, the importance corresponding to the keyword by searching the keyword storage means when the keyword is included in said electronic data And second acquisition means for acquiring information on the necessity of long-term storage;
Based on said first and importance and necessity of the presence or absence of information long-term storage corresponding to the second of the keyword and the acquired signer acquisition means, information on the presence or absence of the necessity of the severity and long-term storage a data storage means for storing the electronic data storage device in accordance with,
A data storage system comprising: The data storage system of claim 1, wherein the data storage means, when there is a need for long-term storage, the data storage system, characterized by converting said electronic data into long-term storage format. The data storage system of claim 1 or 2, wherein the data storage means, the electronic cost storage devices in accordance with the signer and the importance corresponding to the keyword and the need for the presence of information for long-term storage A data storage system characterized by storing data. The first acquisition means determines whether or not an electronic signature is attached to the electronic data from the input device. When the electronic signature is attached , the importance according to the signer of the electronic signature and long-term storage A first acquisition step of searching user storage means storing information on the necessity / non-necessity, and obtaining information on the importance corresponding to the signer and the necessity / non-existence of long-term storage ;
The keyword stored in the keyword storage means storing the keyword to be searched and the importance according to the keyword and the necessity of long-term storage in the electronic data by the second acquisition means It determines whether or not included, the second for obtaining information on the presence or absence of importance and need for long-term storage corresponding to the keyword by searching the keyword storage means when the keyword is included Acquisition process;
The data storage means, based on the first and importance and necessity of the presence or absence of information long-term storage corresponding to the second of the said signer obtained by the obtaining step keyword, the need for the severity and long-term storage a data storage step of storing said electronic data storage device in accordance with the information of the presence or absence of sex,
Data storage method, which comprises a. The data storage method according to claim 4, in the data storage step, when there is a need for long-term storage, the data storage method and converting the electronic data to the long-term storage format. The data storage method according to claim 4 or 5, in the data storage step, the electronic cost storage devices in accordance with the signer and the importance corresponding to the keyword and the need for the presence of information for long-term storage A data storage method characterized by storing data. Computer
It is determined whether or not an electronic signature is attached to electronic data from the input device. When the electronic signature is attached , information on the importance according to the signer of the electronic signature and the necessity of long-term storage is obtained. A first acquisition unit that searches the stored user storage unit and acquires information on the importance corresponding to the signer and the necessity of long-term storage ;
Whether or not the keyword stored in the keyword storage means storing the keyword to be searched and the importance according to the keyword and the necessity of long-term storage is included in the electronic data a second acquisition means for acquiring information on the presence or absence of the importance and need for long-term storage corresponding to the keyword by searching the keyword storage means when the determination, is the keyword contains a
Based on said first and importance and necessity of the presence or absence of information long-term storage corresponding to the second of the keyword and the acquired signer acquisition means, information on the presence or absence of the necessity of the severity and long-term storage a data storage means for storing the electronic data storage device in accordance with,
Program to make it function.

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