ESTIMATION OF QUERY COST IN OBJECT ORIENTED DATABASE SYSTEMS

WU Shengli, WANG Nengbin. ESTIMATION OF QUERY COST IN OBJECT ORIENTED DATABASE SYSTEMSJ. Journal of Computer Research and Development, 1998, 35(1).

Citation:

WU Shengli, WANG Nengbin. ESTIMATION OF QUERY COST IN OBJECT ORIENTED DATABASE SYSTEMSJ. Journal of Computer Research and Development, 1998, 35(1).

Citation:

WU Shengli, WANG Nengbin. ESTIMATION OF QUERY COST IN OBJECT ORIENTED DATABASE SYSTEMSJ. Journal of Computer Research and Development, 1998, 35(1).

Abstract

Good query optimizers are all based on cost, so the estimation of query cost is an indispensable work in query optimization. Based on association operation and considering the factor of index and object clustering, an estimation method for query cost in object oriented databases is presented.

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