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The ability of GIS to store, manage and manipulate large amounts of spatial data, provides urban managers with a powerful tool. GIS's ability to link tabular, non-spatial data to locational information is likewise a powerful analytic capability. Many different facets of government use GIS technology. GIS also provides ways of viewing and analyzing data that was previously impossible or impractical. With the aid of a GIS, a local planning and community development office can track zoning and site design plans that help form and shape a city.

Up to now, as many local governments in Vietnam, the government of district 5 maintains land-use and housing information either on paper maps or in computerized cad-based databases. This issue causes data unsharing and uncommon problem which limits urban management authority of the local government.

This paper focuses on how GIS has been applied to establish, maintain, and analyze urban and land-use information to support the functions of local government in district 5, Hochiminh City (HCMC), Vietnam. The GIS model for district 5 will be presented. Then, some automatically functional procedures by using GIS technology will be addressed. Finally the staff of district 5 should be trained to understand what GIS is and to use DIGIS 1.0 skillfully.

Based on the urgent needs of the local government in managing urban activities especially land-use and housing management, the first GIS project for district 5 was implemented during the time from March, 2002 to June, 2003. Its name is District Geographic Information System or DIGIS. The two primary objectives of the DIGIS are:

• To design and implement the GIS database for land-use and housing within district 5. The objective helps to gather spatial and asspatial data stored on papers and in computerized database.
• To establish some of the most important automatically functional procedures of the Department of Urban Management of district 5. They supports well for the local staff to exploit GIS data.

The user of the system would be staff of district 5.

2 The GIS Model of District 5 Of HCMC
In order to be in keeping with an existing official management, the system should be a centralized one. This centralized system needs one server computer that stores all of GIS data in one geodatabase while other client computers connect to the server to exchange data through a backbone network.

Fig. 3: The conceptual model of the GISystem of the District 5