KR100456775B1 - Apparatus and method for connecting geographic information by distributed foreign - Google Patents

Abstract

The present invention relates to an apparatus and method for sharing geographical information data between distributed heterogeneous systems for sharing and interworking necessary data between open geographic information systems, which are international standards for geographic information systems, which exist in different environments.

The apparatus of the present invention comprises: client means for requesting locally managed metadata retrieval of a distribution system that exists remotely using an application program and requesting a predetermined service; A distribution server that manages the metadata requested by the client means, retrieves the metadata for the corresponding data requested by the user, and accesses the corresponding spatial data; Distributed data means for converting two different protocols and mapping them to a predetermined interface when the client means and the distribution server are heterogeneous; And metadata storage means for storing the metadata. In addition, the method of the present invention includes a first step of determining whether the environment of the distribution server and the client means is the same; A second step of performing protocol mapping by connecting bridges when the environment of the distribution server and the client means is not the same in the first step; A third step of connecting the distribution server by performing the second process or making a connection request to the distribution server if the distribution server and the client means have the same environment in the first process; A fourth process of performing the second process or making a search request if the environment of the distribution server and the client means is the same in the first process; A fifth process of performing the second process or requesting a search result and transmitting the search result if the environment of the distribution server and the client means is the same in the first process; A sixth process of performing the second process or of terminating a request for termination if the distribution server and the client means have the same environment in the first process; And a seventh process of transmitting the result of the execution to the client means after the third to sixth processes and completing the execution.

As such, the present invention can be aimed at preventing the existing investment in software development and overlapping investment in the geographic information system, and can request services by accessing multiple distribution servers through integration considering all environments. The advantage is that access to the data distributed on each server is possible.

Description

Apparatus and method for connecting geographic information by distributed foreign}

The present invention relates to an apparatus and method for sharing geographic information data among distributed heterogeneous types. More particularly, the present invention relates to distributed geographic information data sharing systems, which are required to share data with each other. It relates to a heterogeneous geographic information data sharing apparatus and method.

The existing GIS field has accumulated a lot of spatial data along with social and economic demands, and with the development of software, it has expanded the scope of spatial data operation and improved the means of collecting spatial data. Despite the improvement of data accumulation in the field of GIS, most of GIS projects spend a lot of time in accumulating spatial data. The spatial data constructed is written on different platforms in various formats, and in each format of software that handles GIS data. Therefore, there are several types and interworking is impossible. This difficulty in interoperability makes it necessary to duplicate data with a lot of time and money if you want to carry out the GIS project you want, and people who want to use spatial data often don't even know where the data is located. Even if we know the data, we cannot guarantee that the data is correct or up-to-date. In addition, GIS data and system constructions that have been constructed up to now operate only in the state of a GIS engine having a specific format, and it is very expensive and time to change a geographic information system that a user wants to use.

Accordingly, the present invention is to solve such a problem, the present invention can access, process, and share a variety of heterogeneous spatial data of different format formats regardless of the storage format and location, the GIS engine or spatial DBMS It is an object of the present invention to provide an apparatus and method for sharing geographical information data among distributed heterogeneous types in which spatial information can be constructed so that it can be used regardless of the type.

Another object of the present invention is to avoid the reconstruction of the already built data and to download the desired spatial data online online directly after receiving the additional service for the data distributed heterogeneous to secure the ease of maintenance The present invention provides an apparatus and method for sharing geographic data.

Another object of the present invention is to provide a variety of geo-distributed geographic data to prevent a large amount of spatial data from being duplicated and to share them by searching for physically distributed data regardless of format and type. An information data sharing apparatus and method are provided.

1 is a configuration diagram of a geographical information data sharing device between heterogeneous distributed devices according to the present invention;

2 is a flowchart of a method for sharing geographical information data between distributed heterogeneous systems according to the present invention;

Figure 3 is an embodiment of a method for sharing geographical information data between heterogeneous distributed according to the present invention,

4 is a detailed configuration diagram of a geographical information data sharing device between heterogeneous distributed devices according to the present invention;

FIG. 5 is a diagram illustrating a detailed use of a flow occurring in a detailed configuration diagram of a device for sharing geographical information data between distributed heterogeneous devices shown in FIG. 4;

Figure 6 is an embodiment of a distributed geographical information data sharing device according to the present invention,

Figure 7 is an embodiment of a geographical information data sharing device between heterogeneous distributed according to the present invention,

8 is a diagram illustrating an embodiment of a device for sharing geographical information data among heterogeneous distributed devices according to the present invention;

9 is a diagram illustrating an embodiment of an apparatus for sharing geographical information data between heterogeneous distributed devices according to the present invention;

10 is a diagram illustrating an embodiment of a device for sharing geographical information data among heterogeneous distributed devices according to the present invention;

11 is a view illustrating an embodiment of an apparatus for sharing geographical information data among heterogeneous distributed devices according to the present invention;

12 to 19 are diagrams of web pages in which the model proposed by the distributed heterogeneous geographical information data sharing apparatus and method according to the present invention is actually constructed.

<Explanation of symbols for the main parts of the drawings>

100: client means 200: distribution server

300: distributed data means 400: metadata storage means

A feature of the present invention for achieving the above object is, the client means for requesting a search for metadata managed locally in the distribution system using an application program and requesting a predetermined service; A distribution server that manages the metadata requested by the client means, retrieves the metadata for the corresponding data requested by the user, and accesses the corresponding spatial data; Distributed data means for converting two different protocols and mapping them to a predetermined interface when the client means and the distribution server are heterogeneous; And metadata storage means for storing the metadata.

Preferably, the metadata managed by the distribution server is characterized in that it is possible to modify, delete, add.

Another feature of the present invention is that a user inputs, deletes, modifies and adds metadata remotely or by accessing a web page of a distribution system, and after searching the metadata to find the data requested by the user, corresponding spatial data COM distribution server to access the server; A CORBA distribution server for inputting, deleting, modifying, and adding the metadata, searching the metadata to find data requested by the user, and then accessing the corresponding spatial data server; A WWW distribution server that inputs, deletes, modifies, adds the metadata, searches the metadata to find the data requested by the user, and then accesses the spatial data server; COM framework means for mapping different profiles so that the user side can make a service request to the COM distribution server; CORBA framework means for mapping different profiles so that the user side can make a service request to the CORBA distribution server; WWW framework means for the mapping of different profiles so that the user side can make a service request to the WWW distribution server; And an ORB-based means composed of client means in a distributed environment for performing a framework service used in CORBA, and at least one ORB for delivering a message when the user requests a service to each CORBA distribution server. .

Preferably, the COM distribution server is characterized in that it is implemented based on the COM of the distributed environment.

Preferably, the CORBA distribution server is characterized in that implemented in the CORBA based distributed environment.

Preferably, the WWW distribution server is characterized in that it is implemented based on the WWW profile in a distributed environment.

Another feature of the present invention, CORBA client means for executing a CORBA-based application program or Unix; CORBA-to-WWW framework means for mapping different protocols of the CORBA client means and the WWW distribution server connected to the WEB network; A CORBA distribution server that inputs, deletes, modifies, adds metadata, searches the metadata to find data requested by a user, and then accesses the spatial data server; And a web client means for requesting a metadata search managed locally in the distribution system using an application program and requesting a predetermined service.

Another feature of the present invention, CORBA client means connected to the ORB network and implemented in CORBA-based application program, Windows, Unix; CORBA-to-COM framework means for mapping different protocols of said CORBA client means and a COM distribution server connected to a DCOM network; A CORBA distribution server accessing the ORB network to input, delete, modify, and add metadata, search the metadata to find data requested by a user, and then access the spatial data server; And a COM client means for requesting a locally managed metadata search using an application program and requesting a predetermined service.

Another feature of the present invention, COM client means for executing in a COM-based application program or window; COM-to-CORBA framework means for mapping different protocols of the CORBA distribution server connected to the COM client means and the ORB network; A COM distribution server that inputs, deletes, modifies, adds metadata, searches the metadata to find data requested by a user, and then accesses the spatial data server; And CORBA client means for requesting a locally managed metadata search using an application program and requesting a predetermined service.

Another feature of the present invention, COM client means for executing in a COM-based application program or window; COM-to-WWW framework means for mapping different protocols of the WWW distribution server connected to the COM client means and the WEB network; A COM distribution server that inputs, deletes, modifies, adds metadata, searches the metadata to find data requested by a user, and then accesses the spatial data server; And WWW client means for requesting metadata management managed locally using an application program and requesting a predetermined service.

Another feature of the present invention, WWW client means for running on the WWW-based application program, Windows, Unix connected to the WEB network; WWW-to-COM framework means for mapping different protocols of the WWW client means and a COM distribution server connected to a DCOM network; WWW distribution server accessing the WEB network to input, delete, modify, add metadata, search the metadata to find the data requested by the user, and then access the corresponding spatial data server; And a COM client means for requesting a locally managed metadata search using an application program and requesting a predetermined service.

Another feature of the present invention, WWW client means for running on the WWW-based application program, Windows, Unix connected to the WEB network; WWW-to-CORBA framework means for mapping different protocols of the CORBA distribution server connected to the WWW client means and the ORB network; WWW distribution server accessing the WEB network to input, delete, modify, add metadata, search the metadata to find the data requested by the user, and then access the corresponding spatial data server; And CORBA client means for requesting a locally managed metadata search using an application program and requesting a predetermined service.

Another feature of the invention, the first process of determining whether the environment of the distribution server and the client means is the same; A second step of performing protocol mapping by connecting bridges when the environment of the distribution server and the client means is not the same in the first step; A third step of connecting the distribution server by performing the second process or making a connection request to the distribution server if the distribution server and the client means have the same environment in the first process; A fourth process of performing the second process or making a search request if the environment of the distribution server and the client means is the same in the first process; A fifth process of performing the second process or requesting a search result and transmitting the search result if the environment of the distribution server and the client means is the same in the first process; A sixth process of performing the second process or of terminating a request for termination if the distribution server and the client means have the same environment in the first process; And a seventh process of transmitting the result of the execution to the client means after the third to sixth processes and completing the execution.

Another feature of the invention, the first process of determining whether the environment of the distribution server and the client means is the same; A second step of performing protocol mapping by connecting bridges when the environment of the distribution server and the client means is not the same in the first step; A third step of connecting the distribution server by performing the second process or making a connection request to the distribution server if the distribution server and the client means have the same environment in the first process; A fourth process of performing the second process or making a search request if the environment of the distribution server and the client means is the same in the first process; A fifth process of performing the second process or requesting a search result and transmitting the search result if the environment of the distribution server and the client means is the same in the first process; A sixth process of performing the second process or of terminating a request for termination if the distribution server and the client means have the same environment in the first process; And a seventh step of transmitting the spatial data to the client means and performing the completion after performing the third to sixth steps.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are denoted by the same reference numerals as much as possible even if displayed on the other drawings.

1 is a block diagram of a distributed geographical information data sharing device according to the present invention.

In FIG. 1, the present invention comprises a client means 100, a distribution server 200, distributed data means 300, metadata storage means 400.

The client means 100 performs a search for the corresponding geospatial data using an application program, requests a metadata search managed locally in a distribution system (not shown), and views spatial data, calculates, analyzes spatial data, and the like. Request the catalog service, the distribution server 200 manages to modify, delete, add the requested metadata from the client means 100, and retrieves the metadata for the corresponding data requested by the user, the corresponding spatial data Approach When the client means 100 and the distribution server 200 are heterogeneous, the distributed data means 300 converts two different protocols and maps them to a standard interface defined in an open GIS, and the metadata storage means 400 is searched. Store spatial data in metadata.

2 is a flowchart of a method for sharing geographical information data between distributed heterogeneous systems according to the present invention.

In FIG. 2, in order to access and reuse geospatial data remotely located in a heterogeneous distributed environment, it is determined whether the environment of the distribution server 200 and the client means 100 is the same (step S100). If the environment of the distribution server 200 and the client means 100 is not the same in step S100, bridges are connected (step S101), and protocol mapping is performed (step S102). If the environment of the distribution server 200 and the client means 100 is the same in step S102 or in step S100, a connection request is made to the distribution server 200 (step S103), and the distribution server 200 is connected (step S104). ). In addition, if the environment of the distribution server 200 and the client means 100 is the same in step S102 or in step S100, a search request is made (step S105), and a search is performed (step S106).

On the other hand, if the environment of the distribution server 200 and the client means 100 in step S102 or the same in step S100 is requested (step S107), the search results are transmitted (step S108). If step S102 or the environment of the distribution server 200 and the client means 100 is the same in step S100 (step S109) and ends (step S110). After performing steps S103 to S110, the result is transmitted to the client means 100 (step S111), and the execution is completed.

Figure 3 is an embodiment of a method for sharing geographic information data between distributed heterogeneous according to the present invention.

In FIG. 3, after the client means 100 receives the metadata as a search result for the necessary geographic information data through the distribution server 200, the client 100 may access the remote spatial data server (not shown). In order to extract this, it is determined whether the environment of the distribution server 200 and the client means 100 is the same (step S200). If the environment of the distribution server 200 and the client means 100 is not the same in step S200, bridges are connected (step S201), and protocol mapping is performed (step S202). If the environment of the distribution server 200 and the client means 100 is the same in step S202 or in step S200, a connection request is made to the distribution server 200 (step S203), and the distribution server 200 is connected (step S204). ). Further, if the environment of the distribution server 200 and the client means 100 is the same in step S202 or in step S200, a search request is made (step S205), and a search is performed (step S206).

On the other hand, if the environment of the distribution server 200 and the client means 100 is the same in step S202 or step S200, a search result is requested (step S207), and the search result is transmitted (step S208). If step S202 is performed or if the environment of the distribution server 200 and the client means 100 is the same in step S200, a termination request is made (step S209) and ends (step S210). After performing steps S203 to S210, the spatial data is transmitted to the client means 100 (step S211), and the execution is completed.

4 is a detailed configuration diagram of an apparatus for sharing geographical information data between heterogeneous distributed devices according to the present invention.

4, the distribution server 200 of the present invention is composed of a COM distribution server 210, CORBA distribution server 220, WWW distribution server 230, distributed data means 300 is a COM framework means ( 310, CORBA framework means 320, WWW framework means 330, ORB-based means 500 is composed of ORB1 (5100), ORB2 (520).

The COM distribution server 210 is implemented based on COM in a distributed environment, and inputs, deletes, modifies, and adds metadata. After searching the metadata to find the data requested by the user, the spatial data server (not shown) The CORBA distribution server 220 inputs, deletes, modifies, and adds metadata, searches the metadata to find the data requested by the user, and then accesses the corresponding spatial data server (not shown). It is implemented based on CORBA among distributed environments. In addition, the WWW distribution server 230, which is implemented based on the WWW profile, inputs, deletes, modifies, and adds metadata, searches the metadata to find data requested by the user, and then accesses the corresponding spatial data server.

On the other hand, the COM framework means 310 is responsible for the mapping of different profiles so that the user's environment is different from the corresponding server to make a service request to the COM distribution server 210, CORBA framework means 320 is the user's The side is responsible for the mapping of different profiles to make a service request to the CORBA distribution server 220, the WWW framework means 330 is a different profile to make a service request to the WWW distribution server 230 on the user's side Responsible for the mapping of ORB-based means 500 is the client means 100 and the distribution server 200 to communicate with each other in a distributed environment to perform the framework services used in CORBA using ORB1 (510), ORB2 (520) Deliver a message for

FIG. 5 is a diagram illustrating a detailed use of the flow generated in the detailed configuration diagram of the distributed heterogeneous geographical information data sharing apparatus shown in FIG. 4.

6 is an embodiment of a distributed heterogeneous geographical information data sharing apparatus according to the present invention.

In FIG. 6, the CORBA client means 110 executes an application program or Unix implemented on a CORBA basis, and the CORBA-to-WWW framework means 340 is a WWW connected to the CORBA client means 110 and the WEB network. Map different protocols of distribution server 230. The CORBA distribution server 220 inputs, deletes, modifies, and adds metadata, searches the metadata to find the data requested by the user, and accesses the corresponding spatial data server (not shown), and the WEB client means ( 110 requests a locally managed metadata search using an application and requests a predetermined service.

7 is a diagram for one embodiment of a device for sharing geographical information data among heterogeneous distributed devices according to the present invention.

In FIG. 7, the CORBA client means 110 is connected to the ORB network to execute a CORBA-based application program or window, and the CORBA-to-COM framework means 350 includes the CORBA client means 110 and the DCOM. Map the different protocols of the COM distribution server 220 connected to the network. The CORBA distribution server 220 accesses the ORB network, inputs, deletes, modifies, and adds metadata, searches the metadata to find the data requested by the user, and accesses the corresponding spatial data server (not shown). The COM client means 120 requests a metadata search managed locally by using an application program and requests a predetermined service.

8 is an embodiment of a distributed heterogeneous geographical information data sharing apparatus according to the present invention.

In FIG. 8, the COM client means 120 executes an application program or window implemented on a COM basis, and the COM-to-CORBA framework means 360 is connected to the COM client means 120 and the ORB network. Map different protocols of distribution server 230. The COM distribution server 210 inputs, deletes, modifies, and adds metadata, searches the metadata to find the data requested by the user, accesses the corresponding spatial data server (not shown), and CORBA client means ( 130 requests a metadata search managed locally by using an application program and requests a predetermined service.

9 is an embodiment of a distributed heterogeneous geographical information data sharing apparatus according to the present invention.

In FIG. 9, the COM client means 120 executes an application program or window implemented on a COM basis, and the COM-to-WWW framework means 370 is a WWW connected to the COM client means 120 and the WEB network. Map different protocols of distribution server 210. The COM distribution server 210 inputs, deletes, modifies, and adds metadata, searches the metadata to find the data requested by the user, accesses the corresponding spatial data server (not shown), and WWW client means ( 140 requests a search for metadata managed locally by using an application program and requests a predetermined service.

FIG. 10 is a diagram illustrating an embodiment of a device for sharing geographical information data among heterogeneous distributed devices according to the present invention.

In FIG. 10, the WWW client means 130 executes an application program, a window, and a Unix implemented on a WWW basis by accessing a WEB network. The WWW-to-COM framework means 380 is a WWW client means 130. And different protocols of the COM distribution server 220 connected to the DCOM network. The WWWW distribution server 230 accesses the WEB network, inputs, deletes, modifies, and adds metadata, searches the metadata to find the data requested by the user, and accesses the corresponding spatial data server (not shown). The COM client means 120 requests a metadata search managed locally by using an application program and requests a predetermined service.

11 is a diagram illustrating an embodiment of a device for sharing geographical information data between distributed heterogeneous systems according to the present invention.

In FIG. 11, the WWW client means 130 executes an application program, a window, and a Unix implemented on a WWW basis by accessing a WEB network. The WWW-to-CORBA framework means 390 is a WWW client means 130. And different protocols of CORBA distribution server 230 connected to ORB network. The WWW distribution server 230 accesses the WEB network, inputs, deletes, modifies, and adds metadata, searches the metadata to find the data requested by the user, and accesses the corresponding spatial data server (not shown). The CORBA client means 130 requests a metadata search locally managed by the application and requests a predetermined service.

12 to 19 are diagrams of a web page in which the model proposed by the distributed heterogeneous geographical information data sharing apparatus and method according to the present invention is actually constructed. FIG. 12 is a WWW, COM, CORBA catalog server, etc. This is the first screen that connects the three environments of and connects with each other and then collects the results and sends them to the client. The user is authenticated as a valid user by inputting the given authentication ID and password. FIG. 13 is a screen for searching by a corresponding search condition in order to find geographic data that a user wants to access. The search condition is an administration name search including data, a date search date, a title search for a data set, and a motion type. It is a search and the user can combine these conditions to retrieve the required data.

Figures 14 to 16 show a message that delivers aquatic results after the search request is delivered to each of the different servers at the moment the user makes a search request, followed by server connection, metadata search, search result transmission, and server connection release. 17 is a screen showing the user after integrating different search results, and the user can confirm whether the search result in the server termination field of the search result item is performed by the server in which environment. After the user checks the data, the user presses the map view and then accesses and retrieves the geographic information data as shown in FIG. FIG. 18 may perform a map display function such as screen magnification, area magnification, and movement. 19 is a screen illustrating a heterogeneous catalog server operated in a distributed environment.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As a result, according to the apparatus and method for sharing distributed geographical information data according to the present invention, the following advantages occur.

That is, it can aim to prevent the existing software development problem and the overlapping investment in geographic information system, and to request service by connecting to multiple distribution servers through integration considering all environments and distributed to each server to clients. Access to existing data is possible.

Claims (14)

Client means for requesting metadata management managed locally in the distribution system using an application program and requesting a predetermined service; A distribution server that manages the metadata requested by the client means, retrieves the metadata for the corresponding data requested by the user, and accesses the corresponding spatial data; Distributed data means for converting two different protocols and mapping them to a predetermined interface when the client means and the distribution server are heterogeneous; And Apparatus for sharing geographical information data between heterogeneous distributed, comprising metadata storing means for storing the metadata. The method of claim 1, The metadata managed by the distribution server can be modified, deleted, added, distributed heterogeneous geographic information data sharing device. A COM distribution server for inputting, deleting, modifying, and adding metadata, searching the metadata to find data requested by a user, and then accessing the corresponding spatial data server; A CORBA distribution server that inputs, deletes, modifies, adds the metadata, searches the metadata to find the data requested by the user, and then accesses the spatial data server; A WWW distribution server that inputs, deletes, modifies, adds the metadata, searches the metadata to find the data requested by the user, and then accesses the spatial data server; COM framework means for mapping different profiles so that the user side can make a service request to the COM distribution server; CORBA framework means for mapping different profiles so that the user side can make a service request to the CORBA distribution server; WWW framework means for the mapping of different profiles so that the user side can make a service request to the WWW distribution server; And Distributed heterogeneous characterized in that it comprises an ORB-based means composed of at least one ORB for delivering a message for the communication between the client means and each distribution server in a distributed environment for performing the framework services used in CORBA Geographic information data sharing device between. The method of claim 3, wherein the COM distribution server A device for sharing geographical information data between heterogeneous distributed systems, characterized in that it is implemented based on COM among distributed environments. The method of claim 3, wherein the CORBA distribution server A device for sharing geographic information data between distributed heterogeneous systems, which is implemented based on CORBA among distributed environments. The WWW distribution server of claim 3, wherein Apparatus for sharing geographical information data between heterogeneous distributed systems, characterized in that based on WWW profile among distributed environments. CORBA client means for running CORBA-based applications or UNIX; CORBA-to-WWW framework means for mapping different protocols of the CORBA client means and the WWW distribution server connected to the WEB network; A CORBA distribution server that inputs, deletes, modifies, adds metadata, searches the metadata to find data requested by a user, and then accesses the spatial data server; And Apparatus for sharing geographical information data distributed between heterogeneous information comprising a WEB client means for requesting a search for metadata managed locally using an application program and requesting a predetermined service. CORBA client means connected to the ORB network and executing a CORBA-based application program or window; CORBA-to-COM framework means for mapping different protocols of said CORBA client means and a COM distribution server connected to a DCOM network; A CORBA distribution server accessing the ORB network to input, delete, modify, and add metadata, search the metadata to find data requested by a user, and then access the spatial data server; And A distributed heterogeneous geographic information data sharing device comprising a COM client means for requesting a locally managed metadata search using an application program and requesting a predetermined service. COM client means for executing a COM-based application program or window; COM-to-CORBA framework means for mapping different protocols of the CORBA distribution server connected to the COM client means and the ORB network; A COM distribution server that inputs, deletes, modifies, adds metadata, searches the metadata to find data requested by a user, and then accesses the spatial data server; And And a CORBA client means for requesting a locally managed metadata search using an application program and requesting a predetermined service. COM client means for executing a COM-based application program or window; COM-to-WWW framework means for mapping different protocols of the WWW distribution server connected to the COM client means and the WEB network; A COM distribution server that inputs, deletes, modifies, adds metadata, searches the metadata to find data requested by a user, and then accesses the spatial data server; And And WWW client means for requesting metadata management managed locally using an application program and requesting a predetermined service. WWW client means for accessing the WEB network and executing the WWW-based application program, Windows, Unix; WWW-to-COM framework means for mapping different protocols of the WWW client means and a COM distribution server connected to a DCOM network; WWW distribution server accessing the WEB network to input, delete, modify, add metadata, search the metadata to find the data requested by the user, and then access the corresponding spatial data server; And A distributed heterogeneous geographic information data sharing device comprising a COM client means for requesting a locally managed metadata search using an application program and requesting a predetermined service. WWW client means for accessing the WEB network and executing the WWW-based application program, Windows, Unix; WWW-to-CORBA framework means for mapping different protocols of the CORBA distribution server connected to the WWW client means and the ORB network; A WWW distribution server accessing the WEB network, inputting, deleting, modifying, and adding metadata, searching the metadata to find data requested by a user, and then accessing the spatial data server; And And a CORBA client means for requesting a locally managed metadata search using an application program and requesting a predetermined service. A first step of judging whether the environment of the distribution server and the client means is the same; A second step of performing protocol mapping by connecting bridges when the environment of the distribution server and the client means is not the same in the first step; A third step of connecting the distribution server by performing the second process or making a connection request to the distribution server if the distribution server and the client means have the same environment in the first process; A fourth process of performing the second process or making a search request if the environment of the distribution server and the client means is the same in the first process; A fifth process of performing the second process or requesting a search result and transmitting the search result if the environment of the distribution server and the client means is the same in the first process; A sixth process of performing the second process or of terminating a request for termination if the distribution server and the client means have the same environment in the first process; And And a seventh step of transmitting the result of the execution to the client means after the third step to the sixth step, and completing the execution of the third to sixth steps. A first step of judging whether the environment of the distribution server and the client means is the same; A second step of performing protocol mapping by connecting bridges when the environment of the distribution server and the client means is not the same in the first step; A third step of connecting the distribution server by performing the second process or making a connection request to the distribution server if the distribution server and the client means have the same environment in the first process; A fourth process of performing the second process or making a search request if the environment of the distribution server and the client means is the same in the first process; A fifth process of performing the second process or requesting a search result and transmitting the search result if the environment of the distribution server and the client means is the same in the first process; A sixth process of performing the second process or of terminating a request for termination if the distribution server and the client means have the same environment in the first process; And And a seventh step of transmitting the spatial data to the client means after the third step to the sixth step and completing the sixth step.