Managing geospatial information is an important part of geographical information system(GIS). Database system can help GIS designers separate data management task from the huge systems. However
different database systems
such as relational database(RDB)
object relational database(ORDB) and object oriented database(OODB)
have their native advantages and pitfalls. This paper firstly discussed why database system but not file system is chosen to manage geospatial information
and now there are three major kinds of database systems can be used to manage geospatial data. Then
three typical models--pure relational model
spatial extension model and wrapped model
are introduced
analyzed and compared. The key implementation issues and technologies of wrapped model
which is the most competitive solution
are discussed in details. As a result
ORDB is thought as a more practical way due to current databased technologies