ESTIMATING PREDICATE SELECTIVITY IN OBJECT--ORIENTED DATABASE SYSTEMS
Wang Guo · Chinese Journal of Computers · 1998
Estimating predicate selectivity is a very important issue in query optimization ofdatabase systems. This paper presents an estimating method of selectivity for query optimization ofobject-oriented database systems based on the uniform distribution of parametric methods usingstatistical information about data stored in databases, mainly discusses the selectivity estimation ofcomplex nested predicates (path expressions in WHERE clauses).