Titlebook: Advances in Spatial Databases; Third International David Abel,Beng Chin Ooi Conference proceedings 1993 Springer-Verlag Berlin Heidelberg

patriot

On optimal multiversion access structures,ltiversion capabilities come at no extra cost, neither for storage space nor for runtime, asymptotically in the worst case. The analysis of the behavior of the multiversion B-tree shows that the constant loss of efficiency is low enough to make our suggestion not only a theoretical, but also a practical one.

可能性

Innovative

Congeal

Query- adaptive data space partitioning using variable-size storage clusters,the ideal case an expected query is satisfied by accessing only one storage cluster of appropriate size. To get near to this optimum we adapt the data space partition to query ranges. We call this approach a .. Initial evaluation studies show the feasibility of this approach.

兵團(tuán)

BILK

Lecture Notes in Computer Science. Data manipulation is easily made through a spatial extension of SQL. Optimization techniques are used, providing for a strong integration of spatial operators based on spatial indexing and join-indices techniques. Built-in spatial functionalities may be further extended by application programmers through object oriented features.

initiate

要塞

收藏品

Spatial data management in database systems: Research directions,r spatial data. The objective of this paper is to identify a number of key issues that need to be addressed in the near term before we can expect to see a rich support of spatial data management in commercial database systems.

pancreas

Strong integration of spatial domains and operators in a relational database system,. Data manipulation is easily made through a spatial extension of SQL. Optimization techniques are used, providing for a strong integration of spatial operators based on spatial indexing and join-indices techniques. Built-in spatial functionalities may be further extended by application programmers through object oriented features.