JPH07334405A - Management system for network information data base - Google Patents

Abstract

PURPOSE:To retrieve network information by the retrieval of a local network information data base included in its own machine. CONSTITUTION:At the time of starting a client machine, a data request means 5 issues a network information transmitting request to a server machine through a transmitting/receiving means 7. A data response means 6 acquires network information from a network information data base 1 through a data base referring means 3 and returns the information. At the time of receiving the network information, a data updating means 4 initializes the network information in the data base 1 through a data base updating means 2, and when the updating of the data base 1 is necessary, updates the data base 1 by the means 2 and issues a data updating request to all other machines through the means 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network information database management system, and more particularly to network-related information commonly used by each machine in a network system in which a plurality of machines are connected via a network (hereinafter, simply referred to as network information). Called)) for managing the network information database.

[0002]

2. Description of the Related Art In a conventional network information database management method, a server machine centrally manages a network information database, and when a client machine needs network information, it makes an inquiry to the server machine. Was there.

[0003]

In the conventional management method of the network information database described above, the client machine inquires the server machine every time the network information is needed, so that it takes time to retrieve the network information. There was a problem of this.

Further, when the server machine is temporarily stopped, there is a problem that the network information cannot be retrieved.

In view of the above points, an object of the present invention is to provide a network information database in each machine so that the network information can be searched only by searching the local network information database on the own machine. To provide a management method.

As a prior art, in order to solve the problem that the use of databases other than a specific center is restricted when the databases are centrally managed in a plurality of computer systems, each system basically uses databases of the same contents. The update log of its own center, which is stored and sent within a certain period, is sent to the partner center, and the partner center is equipped with a means to reflect it in its own database so that it can be updated asynchronously and independently on multiple computer systems. There is known a distributed database management processing system which maintains and guarantees the data consistency of the created database (see Japanese Patent Laid-Open No. 63-278155). However, this method collects the update log within a certain period and sends it to the other center to reflect it, so that the update of the network information database on one machine is immediately reflected on the network on all other machines. It is very different from the present invention reflected in the information database.

[0007]

A network information database management system of the present invention is a network system in which a plurality of machines are connected via a network, and each machine stores network information commonly used by each machine. Network information database, a database updating means for updating the network information database of the own machine, a database reference means for referring to the network information database of the own machine, a data transmitting / receiving means for controlling data transmission / reception, and a client machine Data request means for issuing a network information transmission request to the server machine through the data transmission / reception means in order to initialize the network information in the network information database of the own machine at startup, and the network from the server machine When the information is sent, the database updating means initializes the network information in the network information database of the own machine, and when it is necessary to update the network information database of the own machine, the network of the own machine is updated by the database updating means. From the client machine, a data update means for issuing a data update request to all the other machines through the data transmitting / receiving means in order to update the information database and to make the contents of the network information database of all the other machines identical. In response to the network information transmission request, the database reference means acquires network information from the network information database of the own machine, and the data transmission / reception means returns the data to the client machine. To.

[0008]

The present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a network system to which a network information database management system according to an embodiment of the present invention is applied. This network system is configured by connecting a plurality of (two in the figure) machines via a network, and each machine includes a network information database 1 for storing network information commonly used by the machines, Database updating means 2 for updating the network information database 1 of the own machine, database reference means 3 for referring to the network information database 1 of the own machine, and network information in the network information database 1 of the own machine when the client machine starts up. A data requesting means 5 for issuing a network information transmission request to the server machine through the data transmitting / receiving means 7 for initial setting;
When the network information is sent from the server machine, the database updating means 2 initializes the network information in the network information database 1 of the own machine, and when it is necessary to update the network information database 1 of the own machine, the database updating means 2 updates the network information database 1 of its own machine and issues a data update request to all other machines through the data transmission / reception means 7 in order to make the contents of the network information database 1 of all other machines identical. In response to the network information transmission request from the data update means 4 and the client machine, the database reference means 3 acquires the network information table from the network information database 1 of the own machine and the data transmission / reception means 7 clears it. A data response means 6 for returning the Tomashin, data communication means 7 for controlling transmission and reception of data
And are provided. Any machine can be the client machine and the server machine.

Referring to FIG. 2, the process of the database updating means 2 is a database updating request waiting step S20.
1 and update network information table determination step S2
02, update type determination step S203, record search step S204, and record correction step S205.
Record adding step S206, all record deletion determining step S207, and record searching step S20.
8, record deletion step S209, and all record deletion step S210.

Referring to FIG. 3, the process of the database reference means 3 is a database reference request waiting step S30.
1 and reference network information table determination step S3
02, a record search step S303, and a record reference step S304.

Referring to FIG. 4, the processing of the data updating means 4 is performed by a request waiting step S401, a network information table initial setting step S402, a database updatable inquiry request transmitting step S403, a response waiting step S404, and a specific time. Waiting step S405
, Local network information database updating step S406, all other machine data update request transmitting step S407, request type determining step S408, and local network information database updating in progress determining step S
409, and a data updating response transmission step S410,
Local network information database update step S
And 411.

Referring to FIG. 5, the process of the data request means 5 is a network information transmission request creation step S501.
And a network information transmission request transmission step S502
And a network information transmission request transmission end determination step S
And 503.

Referring to FIG. 6, the process of the data response means 6 is a network information transmission request analysis step S601.
And network information table extraction step S602
And a network information table returning step S603.

Referring to FIG. 7, the processing of the data transmitting / receiving means 7 includes a request event determining step S701, a data transmitting step S702, a received data type determining step S703, and a received data delivery step S704 to the data updating means. The received data is delivered to the data response unit in step S705.

Referring to FIG. 8, the network information database 1 includes a correspondence table between machine names and addresses shown in (a), a correspondence table between login names and passwords shown in (b), and (c). The network information tables of the correspondence table of the address of the mail shown and the abbreviated name and the correspondence table of the network name and the network number shown in (d) are stored.

FIG. 9 is a diagram showing a process of receiving the network information table from the server machine #n and initializing the network information database m-1 of the client machine #m when the client machine #m starts up. In the following description, each unit will be described by adding a machine number, "-", and a symbol in order to clearly indicate which machine the unit is.

FIG. 10 is a diagram showing a process of updating the network information databases m-1 and n-1 during system operation.

Next, the operation of the management system of the network information database of this embodiment having the above-mentioned configuration will be described.

First, with reference to FIG. 9, a description will be given of a case where the network information table is received from the server machine #n and initially set in the network information database m-1 of the client machine #m when the client machine #m starts up.

When the client machine #m starts up, the data request means m-5 of the client machine #m initializes the network information table in the local network information database m-1 on its own machine #m. Create an information transmission request (step S5
01), and transmits it to the server machine #n which has already started up through the data transmitting / receiving means m-7 (step S5).
02). The data requesting means m-5 is a correspondence table between the machine name and the address, a correspondence table between the login name and the password, a correspondence table between the address of the mail and its abbreviation, and a correspondence between the network name and the network number. If a network information transmission request is created and transmitted for each network information table in the table, and the transmission of the network information transmission request ends (step S
503), the processing ends.

Data transmitting / receiving means n- of the server machine #n
When the network information transmission request is received (step S701), it determines whether it is a network information transmission request (step S703). Since it is a network information transmission request, the network information transmission request is sent to the data response means n-6. (Step S705).

The data response means n-6 analyzes the network information transmission request (step S601), and the database reference means n-3 fetches the corresponding network information table from the network information database n-1 (step S602). The network information table is sent back to the requesting client machine #m through the data transmitting / receiving means n-7 (step S60).
3). This processing is performed by a network information transmission request from the requesting client machine #m, a correspondence table of machine names and addresses, a correspondence table of login names and passwords, a correspondence table of mail destination addresses and their abbreviations, And each network information table of the correspondence table between the network name and the network number.

In the client machine #m, which is the source of the network information transmission request, the database transmission / reception means m-7.
Receives the network information table (step S701), it determines whether it is a network information transmission request (step S703). Since it is not a network information transmission request, the network information table is passed to the data updating means m-4 (step S703). S704).

When the data updating means m-4 analyzes the received network information table and finds that it is the network information table from the server machine #n (step S401), the data updating means m-2 causes the database updating means m-2 to perform its own machine #. network information database m-1
The network information table is initialized to (step S402). The initial setting of the network information table in the network information database m-1 is to delete the network information table by the database updating means 2 and then add the network information table sent from the server machine #n to the network information database 1. It is done by doing. This processing is performed for each network including a machine name / address correspondence table, a login name / password correspondence table, a mail destination address / abbreviated name correspondence table, and a network name / network number correspondence table. Performed on the information table.

The database updating means m-2 receives the request for adding the network information table (step S20).
1) After determining the network information table to be updated in the network information database m-1 (step S
202), because the update type is additional (step S20)
3), a network information table is added to the network information database m-1 (step S20).
6).

Next, with reference to FIG. 10, an operation of updating the network information database m-1 of the own machine #m by an update request generated in a certain machine #m will be described.

When the data updating means m-4 of the machine #m makes a request for updating the network information database m-1, the data updating means m-4 analyzes from which machine the update request is made (step S401), own machine #
Since it is an update request from m, in order to check whether there is another machine that is updating the network information database 1, a database updatable inquiry request is made and all other machines are sent through the database transmitting / receiving means m-7. (Step S403).

When a database updatable inquiry request is received from another machine #m (step S408), the data updating means n-4 is updating the local network information database n-1 on its own machine #n. It is determined whether or not (step S409), and if updating is in progress,
A data updating response is sent back to the requesting machine #m (step S410).

When there is a data updating response from one or more other machines after transmitting the database updatable inquiry request (step S404), the data updating means m-4.
Waits for a few seconds with a random number (step S405),
The database updatable inquiry request is transmitted again (step S403), and synchronization for updating the network information database 1 is established.

If there is no response after waiting for a certain period of time (step S404), the data updating means m-4 judges that there is no other machine that is updating the network information database 1, and the data updating means m-4 on its own machine #m. The local network information database m-1 is updated (step S4).
06).

Next, the data updating means m-4 updates the network information of the network information database 1 of all the other machines by transmitting a data update request to all the other machines (step S407). .

When the data transmission / reception means n-7 receives the data update request (step S701), it judges the type of the received data (step S703). Since it is not a network information transmission request, the data update request is sent to the data update means n. -4 (step S704).

When the data updating means n-4 receives the data updating request (step S401), it determines the type of the request (step S408), and the database updating means 2 makes a local network information database n- on the machine #n. 1 is updated (step S411).

When the database update means n-2 receives the database update request from the data update means n-4 (step S201), the correspondence table between the machine name and the address, the correspondence table between the login name and the password, and the mail Correspondence table of destination address and its abbreviation,
After determining the network information table to be updated among the correspondence table of the network name and the network number (step S202), the update type is determined (step S203), and the correction, deletion or addition process is performed.

In the case of correction, database updating means n-2
Retrieves the corresponding record (entry) from the network information table (step S204) and corrects the data in the record (step S205).

In the case of deletion, the database updating means n-2
Determines whether all the records in the network information table have been deleted (step S207), and if all the records have been deleted, deletes all the records from the network information table (step S210). If not all records are deleted, the database updating means n-2
Searches for the corresponding record (step S20).
8) Then, the record is deleted (step S209).

In the case of addition, the database updating means n-
2 adds a record to the network information table (step S206).

Finally, the network information database 1
Will be described.

When a reference request for the network information database 1 is made (step S301), the database reference means 3 of the own machine refers to the local network information database 1 on the own machine. The database reference unit 3 responds to the reference request with a correspondence table of machine names and addresses, a correspondence table of login names and passwords, a correspondence table of mail destination addresses and their abbreviations, and network names and network numbers. Which network information table is referred to in the corresponding table (step S302), and the corresponding record is searched from the network information table (step S30).
3) The record is referenced (step S304).

[0041]

As described above, according to the present invention, a network information database is provided on each machine, network information is acquired from the server machine when the client machine starts up, and the network information database is initialized. When updating, the update result is reflected not only in the local network information database on the local machine but also on the network information database on all other machines. Since it can be performed only by searching the database, there is an effect that the search time can be shortened.

Further, once the client machine is started up, there is an effect that the network information can be searched even if the server machine is down.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a management system of a network information database according to an embodiment of the present invention.

FIG. 2 is a flow chart showing a process of a database updating means in FIG.

FIG. 3 is a flowchart showing a process of a database reference unit in FIG.

FIG. 4 is a flowchart showing the processing of the data updating means in FIG.

5 is a flow chart showing the processing of the data requesting means in FIG. 1. FIG.

FIG. 6 is a flowchart showing a process of a data response unit in FIG.

FIG. 7 is a flowchart showing the processing of the data transmitting / receiving means in FIG.

8 shows a network information table stored in the network information database in FIG. 1, (a) shows a correspondence table between machine names and addresses, (b) shows a correspondence table between login names and passwords, FIG. (C) is a correspondence table between the mail destination address and the abbreviation,
(D) shows a correspondence table of network names and network numbers.

FIG. 9 is a diagram showing a process of receiving a network information table from a server machine and initializing the network information database of the client machine when the client machine starts up.

FIG. 10 is a diagram showing a process of updating a network information database during system operation.

[Explanation of symbols]

 1 Network Information Database 2 Database Update Means 3 Database Reference Means 4 Data Update Means 5 Data Request Means 6 Data Response Means 7 Data Sending Means

Claims (5)

[Claims] 1. In a network system in which a plurality of machines are connected via a network, each machine updates a network information database storing network information commonly used by each machine and a network information database of its own machine. Database update means to perform, database reference means to refer to the network information database of the own machine, data transmission / reception means to control data transmission / reception, and to initialize the network information in the network information database of the own machine when the client machine starts up In order to issue a network information transmission request to the server machine through the data transmission / reception means, and the database updating means when the network information is sent from the server machine. Initially set the network information in the network information database of the own machine, and when it is necessary to update the network information database of the own machine, the database information updating means updates the network information database of the own machine and the network information databases of all other machines. Data updating means for issuing a data updating request to all other machines through the data transmitting / receiving means and the database referring means in response to a network information transmission request from a client machine. And a data response means for acquiring network information from the network information database and returning it to the client machine by the data transmission / reception means. 2. The network information database,
The network information database management method according to claim 1, wherein a correspondence table of machine names and addresses is managed as network information. 3. The network information database,
2. The network information database management method according to claim 1, wherein a correspondence table of login names and passwords for logging in to a machine is managed as network information. 4. The network information database comprises:
2. The network information database management method according to claim 1, wherein a correspondence table of a mail destination address and its abbreviation is managed as network information. 5. The network information database comprises:
2. The network information database management method according to claim 1, wherein a correspondence table of network names and their network numbers is managed as network information.