It is necessary to provide any essential background data and thematic data timely in image processing and applications. In fact

it is very difficult to integrate different kinds of data into one database that is managed by commercial GIS or image processing software such as ARC/INFO or ERDAS. In this paper

the author describes an integrated database management system which is a framework based on different kinds of database

such as image database

vector spatial database

spatial entity spectrum characteristics database

spatial entity image sample database

control point （tics） database

documents database

models database

and product database. The querying and retrieving system

which are basic functions of integrated database management system

depend on metadata being divided into three parts: database metadata

dataset metadata and attribute field metadata. Finally

the author introduces the concept of virtual database that is a logical database based on other practical databases

and describes its structure and application in product making system for a large remote sensing application in detail.