Spatial, textual and multimedia databases
نویسنده
چکیده
This paper presents an overview of indexes for spatial and multimedia databases, whose indexes are often of the same kind as spatial ones. Records in spatial databases are characterized by their locations in an n-dimensional space where n is 1 or greater. A spatial database query involves finding all objects at a certain location, or finding all locations or areas occupied by a certain set of objects. The retrieval will be timeconsuming if the DBMS must traverse the entire database in the search for the matching records, but will be speeded up if an index is used. For spatial database applications it is important to study efficient retrieval, insertion and deletion. Implementations of spatial indexes that facilitate these operations have been a very active field of study in database research.
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