JPH0644127A - Data access system - Google Patents

Abstract

PURPOSE:To shorten read time and to set access interfaces from a user base machine at a remote place to be the same without depending on the type of a data at the time of reading a data base file managed in the data base by a user interface from a data base machine at the remote place through a network. CONSTITUTION:The data base machine 1 is connected with the user interface machine 2 by a network 3. A network function part 8 and a data base function part 9 are provided in the data base machine 1. The data base function part 9 supplies a file name 12 to the network function part 8. Thus, the network function part 8 directly reads a designated data file 5 and transmits it to the user interface machine 2. Thus, read time is shortened. Then, access by the same interface becomes possible from the user interface machine 2 without depending on the type of the data base by dividing the network function part 8 and the data base function part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data access system, and more particularly to a data access system for accessing a remote database via a network to retrieve data.

[0002]

2. Description of the Related Art Conventionally, when retrieving data from a database, the data itself to be read is stored in the database, and the data is read from another program function unit such as a network function unit for controlling the network and referred to. At the time, the data obtained as a result of accessing the database was output to a data file, and this data file was read.

Further, in a database access method utilizing a database machine having a network function of accessing a database via a network, a network function unit is constructed as a set with a database,
The user interface machine on the reading side is accessing through an interface similar to that accessed directly from the database machine.

[0004]

In this conventional database access method, since the data itself to be read is stored in the database, the data is not transferred from other program function units such as the network function unit. I couldn't access it and had to read more data files that allowed the data retrieved in the database. Therefore, there is a drawback that the entire data fetching time becomes long, and if the data is large, a wasteful time is required to access the data file.

Further, as a result of performing a plurality of different searches,
Even when referring to the same data, there is a drawback in that it is necessary to create a data file each time and pass it to another program function unit.

Further, in the database access method having a network function, in order to access a plurality of different types of databases, it is necessary for the user interface machine to be aware of the type of database used. There was a drawback.

The object of the present invention is to eliminate the above-mentioned drawbacks, to significantly suppress the number of times data files are accessed, to enable direct reading by the network function unit, to speed up signal transmission to the network, and to greatly increase the time required for retrieval. And to provide the same number of access methods from the user interface machine regardless of the type of database.

[0008]

According to the data access method of the present invention, a database machine having a database function for storing and managing data and a plurality of user interface machines having an interface function with a user are connected via a network. In the data access method of accessing the database of the database machine by the user, the data read instruction information for instructing the data read between the user interface machine and the database machine and the read data by the data read instruction information are transmitted and received. Data transmitting and receiving means,
The data transmission / reception means is activated by the received data read instruction information, searches for data that matches the instructed condition, and reads the data from the data file based on the name of the data file that stores the retrieved data. Data read means for supplying as read data to be transmitted / received, and user interface means for outputting the read data received by the data transmitting / receiving means via the network as a file of the user interface machine or displaying it on a display are provided. Have a configuration.

Further, in the data access method of the present invention, a network function unit for executing network control in the database machine and a database function unit for executing database control are separately arranged, and a search data file is not transferred to the network. The network function unit directly reads and transmits the data file based on the name of a data file provided to the network function unit by the database function unit.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

The configuration of the embodiment shown in FIG. 1 has a user interface for connecting to a database 3 to establish a database function for storing and managing data, and a database interface for accessing and storing a database in the database machine 1. And a machine 2. Although there are a plurality of user interface machines 2, only one is shown in FIG.

The database machine 1 has a database 4
And a plurality of data files 5 under the control of the database 4, a network function unit 8 having a data transfer function using the network 3, and a database function unit 9 for controlling the database 4.

The user interface 2 has a memory area 7 for storing the read data file, a network function unit 10 having a data transfer function using the network 3, and an interface function for user side data access. A user interface function unit 11 and a display keyboard 6 used as an interface for data access on the user side are provided.

Among these constituent elements, the network function units 8 and 9 and the network 3 constitute data transmitting / receiving means, the database function unit 9, the database 4 and the data file 5 constitute data reading means, the memory area 7 and the user. The interface function unit 11 and the display keyboard constitute a user interface unit.

Next, the operation of this embodiment will be described.

When a data retrieval request is output from the display / keyboard 6 through the user interface function unit 11, the network function unit 10 of the user interface machine 2 sends a signal indicating the data retrieval request to the network 3 and the network 3 It is supplied to the network function unit 8 of the database machine 1 via the, and further provided to the database function unit 9.

The database function unit 9 activates the database 4 by the input from the network function unit 8 and sends the file name 12 of the data file 5 managed by the database 4 to the network function unit 8.

The network function unit 8 which knows the file name 12 directly reads the data file 5 based on the file name 12 and sends the contents of the data file 5 to the network 3 as shown by the dotted line.

The user interface machine 2 captures signals on the network 3 and stores the contents in the memory area 7 or displays them on the display keyboard 6 according to the request for data retrieval.

In this way, the network function and the database function in the database machine are separated, and the search data file between the two functional units is transferred to the network by the network functional unit using the name of the data file provided from the database functional unit. By directly reading and executing the data directly, the number of accesses to the data file can be remarkably reduced, the signal transmission to the network can be remarkably accelerated, and the total search time can be remarkably reduced.

Furthermore, it is possible to perform a search in the same access format from the user interface machine regardless of the database type.

[0022]

As described above, according to the present invention, a network function section for network control and a database function section for database control are separately arranged in a database machine, and a network of search data files executed between these function sections. Upward transfer is compared with the method in which the network function unit directly reads out based on the name of the data file provided from the database function unit and sends it out to the network, and delivers the data file of the result retrieved by the database function unit. The number of times the data file is accessed is extremely small, and because the network function unit directly reads the file, signals can be sent quickly to the network, and the total time required for searching can be significantly reduced. There is an effect that can be done.

Further, by arranging the network function unit and the database function unit separately, there is an effect that information can be retrieved by a similar access method from the user interface machine regardless of the type of database.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

[Explanation of symbols]

 1 database machine 2 user interface machine 3 network 4 database 5 data file 6 display / keyboard 7 memory area 8 network function unit 9 database function unit 10 network function unit 11 user interface function unit 12 file name

Claims (2)

[Claims] 1. A database machine having a database function for accumulating and managing data and a plurality of user interface machines having an interface function with a user are connected via a network, and a user accesses a database of the database machine. In the data access method, data read instruction information for instructing data read between the user interface machine and the database machine, and data transmitting / receiving means for transmitting / receiving read data according to the data read instruction information, and the received data read instruction Launched with information,
Data reading means for searching data matching the instructed condition, reading the data from the data file based on the name of the data file storing the searched result data, and supplying it as read data to be transmitted / received by the data transmitting / receiving means; A data access system comprising: a user interface unit for outputting the read data received by the data transmitting / receiving unit via the network as a file of the user interface machine or displaying the read data on a display. 2. A network function unit that executes network control in the database machine and a database function unit that executes database control are separately arranged, and transfer of a search data file to the network is performed by the database function unit. 2. The data access method according to claim 1, wherein the network function unit directly reads out and sends out based on the name of the data file provided to the network function unit.