JP3402204B2 - Database control method and device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention separates a process for a database from a process that does not depend on the database, so that an increase in the number of work steps can be suppressed even if the types of data to be handled increase. And equipment.

[0002]

2. Description of the Related Art In a conventional database control method and apparatus compatible with a map processing system, when map data in a format not supported by the map processing system is used, data conversion is often performed. However, since the map data information before conversion is converted including the way of holding the data, the data for the format suitable for the analysis process before the conversion becomes a data format unsuitable for the analysis process after conversion. There is.

In an ordinary map processing system, the map data format that can be handled by the map processing system is uniquely determined. However, users of the map processing system want to handle map data in various formats at the same time, and to display map data that is not map data but overlays the marker data with position information. is there.

However, since the conventional map processing system is not configured to handle map data in a plurality of formats, data conversion to map data that can be handled by the map processing system is performed in response to the above-mentioned request. Alternatively, the function will be expanded so that the map processing system can handle multiple types of map data.

[0005]

Since the conventional method and apparatus for controlling a database are configured as described above, if the map processing system is extended to handle a plurality of types of map data, for example, it will be supported. The coordinate conversion process, the display control process, the database input / output process, etc. must be incorporated for each map database to be used.
As the number of map databases supported increases, the system structure becomes more complicated, and the scale of the source code becomes enormous, resulting in an increase in the number of man-hours required for maintenance and function expansion.

Therefore, an object of the present invention is to avoid the complication of the system structure for data conversion when using the data of the unsupported format and to facilitate the maintenance,
Another object of the present invention is to provide a database control method and apparatus that eliminates the need for incorporating common processing such as display and reduces the number of man-hours required for development.

[0007]

A database control method according to the present invention is an individual process for performing a process for each database and a database process that does not depend on each database.
Separating the common process of performing processing common to over scan, the at common processing performs common processing such as display based on the common reference, such as the common coordinate system newly defined, and in the individual process processes the conversion of data into a common reference, such as a database output processing said common coordinate system, if such data formats support different new database, the individual processing for the database
It is characterized by making it possible to add new parts only.

Further, the present invention reads out the function module that is set in advance, a control device of the database to be interposed between the user application and the plurality of map database to construct a specific map data processing system, the An overall control unit that does not exist in each map database , performs a process common to each map database such as a display based on a newly defined common coordinate system, and a process for performing the process for each of the map databases. A map database control unit is provided for providing the functional module to the user application and commonizing data for the common processing in the overall control unit.

According to the database control method of the present invention, by defining a common reference such as a coordinate system common to each database, individual processing and common processing for each database are separated, and in the common processing, the common processing is performed. Display based on a common standard such as a standard coordinate system. In addition, in the individual processing, database input / output processing and data conversion processing to a common standard such as the common coordinate system are performed, and a data format, etc. When newly supporting different databases, only the individual processing for the database needs to be newly developed to simplify the system structure and facilitate maintenance, and to display the database. Eliminates the need to incorporate the processing of and reduces the work man-hours during development.

The database control apparatus of the present invention separates the individual processing performed by the database control unit for each database from the common processing performed by the overall control unit based on a common coordinate system. In the above, the display based on the common coordinate system is performed, and in the individual processing, the input / output processing of the processing target database and the coordinate conversion processing to the common coordinate system are performed, and the data format is different. In order to newly support the above, it is necessary to newly develop only the individual processing for the database, simplifying the system structure and easiness of maintenance, and processing for displaying on the database. Eliminates the need to incorporate and reduces the work man-hours during development.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. The database control method and apparatus according to the present embodiment, for example, define a common coordinate system to separate the control unit that performs processing on each map database from the control unit that performs common processing on the map database. In the control unit that performs the common processing, common processing such as display is performed on the newly defined common coordinate system, and in the control unit that performs the processing for each map database, common control is performed with the database input / output processing. When a new map database is supported by performing only the coordinate conversion process to a specific coordinate system, it is only necessary to newly develop the control unit that performs the process for the map database. This simplifies the system structure, facilitates maintenance, and eliminates the need for incorporating common processing such as display It is intended to reduce the man-hours of time management system development.

FIG. 1 is a block diagram showing the configuration of a database control apparatus to which the database control method of this embodiment is applied. This database control device includes an overall control unit 2, a first map database control unit 3 and a second map database control unit 4, and the map databases DB11, DB12 by the user application 1 are included.
Control processing for. A portion surrounded by a broken line in FIG. 1 indicated by reference numeral 100 is a constituent portion of the database control device of the present embodiment.

The following explanation will be given in the map database D.
This is an explanation of an example in which B11 and DB12 are handled at the same time. Although the first map database control unit 3 and the second map database control unit 4 are shown as the control units for the individual map databases, the map database DB1
1. When the types of map data handled like 1 , map database DB1 2 ... increase, the map database control units corresponding to the map database DB1 1 , map database DB1 2 ... increase in parallel.

The user application 1 calls the function of the database control device 100 of this embodiment,
It is application software that builds a map processing system unique to a business. This user application 1
Uses the functions of the map database control units 3 and 4 that control the respective map databases when performing processing such as searching and reading for each map database.

The overall controller 2 is a database controller 1
Control of the entire 00 and common processing independent of the map database. The processing for each map database is performed by the overall control unit 2 issuing a command to the map database control unit that controls each map database.

The first map database control unit 3 performs operations such as searching and reading the map database DB11. User application 1 directly
When operating the map data of the map database DB11, the function provided by the first map database control unit 3 is used.

The second map database control unit 4 performs operations such as searching and reading the map database DB12. User application 1 directly
When the map data in the map database DB12 is operated, the function provided by the second map database control unit 4 is used.

Input / output of information such as issuance of commands among the overall control unit 2, the first map database control unit 3, and the second map database control unit 4 is performed by communication processing. Although the interface part of the communication part is clearly defined, the internal implementation of each control part is performed without depending on the other control parts. Further, since various map data are handled at the same time, when the information about the map data is exchanged with other control units, the common coordinate system independent of the data format is used.

Next, the operation of the present embodiment will be described with reference to FIG.
And FIG. 3 will be described. In the following explanation,
Map database DB11 and map database DB12
The operation will be described with reference to the drawing and retrieval of. When performing overlay drawing of the map data of the map database DB 11 and the map database DB 12, the user application 1 first makes a drawing request to the overall control unit 2. The overall control unit 2 requests the first map database control unit 3 and the second map database control unit 4 managing the respective map databases to read the map data, and draws the drawing received from the user application 1. Conditions (drawing area, drawing attributes, window information, etc.)
Thus, the read map data is drawn on the window 5. Also in the case of scrolling, the processing is performed in the same flow while changing the drawing area. FIG. 2 is an operation explanatory diagram in the case where the map data of the map database DB11 and the map database DB12 are overlaid and drawn on the window 5.

Further, in the case of retrieval, since it is performed for each target map database, it is not necessary to consider the processing for other map databases. The user application 1 directly makes a search request to the map database control unit that manages each map database, and then the search result is returned from the map database control unit. FIG. 3 is an operation explanatory diagram when the search is performed.

As described above, according to the present embodiment, by separating the processing part for each map database from the processing part independent of each map database,
Even if the number of types of map data handled, such as map data that is not compatible with the format, increases, existing parts will not be affected, and it will be possible to handle with less work man-hours compared to the past. That is, by defining a common coordinate system, a map database control unit that performs processing for each map database and an overall control unit that performs common processing common to each map database are separated, and in the overall control unit,
In the map database control unit that performs common processing such as display on the newly defined common coordinate system, and also performs processing on individual map databases, the database input / output processing and the coordinates to the common coordinate system are performed. When a map database that does not support the format is newly supported only by performing the conversion process, it is necessary to newly develop only the map database control unit that performs the process for the map database. Compared with the method, the system structure is simplified and the maintenance becomes easier. Moreover, since it is not necessary to incorporate a common process such as display, the number of man-hours required for development can be reduced. In addition, by using only necessary parts in combination, unnecessary resources are unnecessary at the time of execution.

In the above description, the map database has been described, but the same method can be applied to an attribute database that manages character information and numerical information, and an image database that manages various formats.

[0023]

As described above, according to the present invention, the part of the individual processing for each database and the part of the common processing common to each database independent of each database are separated, and the data format etc. When it becomes necessary to support a different new database, it is necessary to add only the individual processing corresponding to that database so that the existing part is not affected, so a new database with a different data format, etc. It becomes necessary to support it, it is possible to prevent the system structure from becoming complicated even if the type of data to be handled increases, maintenance becomes easy, and it is necessary to newly install common processing such as display corresponding to the new database. It also has the effect of reducing the number of man-hours required for development.
In addition, by using only necessary parts in combination, there is an effect that unnecessary resources are unnecessary at the time of execution.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a map database control system to which a database control method according to an embodiment of the present invention is applied.

FIG. 2 is an operation explanatory diagram when overlay drawing of map data on a window is performed in the map database control system according to the embodiment of the present invention.

FIG. 3 is an operation explanatory diagram when searching map data in the map database control system according to the embodiment of the present invention.

[Explanation of symbols]

1 ... User application, 2 ... Overall control unit,
3, 4 ... Map database control unit, DB11, DB1
2 ... Map database, 100 ... Map database control device.

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01C 21/00 G06F 12/00 511 G06F 17/30 G06T 1/00

Claims (4)

(57) [Claims] 1. In a database control method for controlling a plurality of databases based on a functional module read by a user application to construct a unique data processing system, an individual process for performing a process for each database and a database. Common to each independent database
Process to separate the common process of performing, in the above common processing performs common processing such as display based on the common reference, such as the common coordinate system newly defined, and in the individual process, database input and output processing When converting data to a common standard such as the common coordinate system and supporting a new database with a different data format, it is possible to add only the individual processing part to the database. A method of controlling a database characterized by: 2. The database is a map database for map data.
How to control the described database. 3. A reads the function module which is set in advance, a control device of the database to be interposed between the user application and the plurality of map database to construct a specific map data processing system, in each map database An overall control unit that does not exist , performs a process common to each map database such as display based on a newly defined common coordinate system, and the functional module for performing a process for each of the map databases. A map database control unit that provides the user application and standardizes the data for the common processing in the overall control unit. 4. The database control device according to claim 3, wherein the map database control unit performs a database input / output process of a map database to be controlled and a coordinate conversion process to the common coordinate system. .