Query optimisation in relational database systems. Query optimisation in relational database using improved approximations of selectivies. The PRECI placement and indexing technique. Performance issues in concurrency control. The use of cluster analysis for the enhancement of database performance. Data dictionary features for reorganisation, restructuring and query optimisation. Data access methods and structuring to enhance performance. Performance analysis for DBMS evaluation in information systems planning. Modelling distributions of secondary keys. Performance-oriented database design laboratory. Performance evaluation in database systems. Enhancing perfofrmance in conceptual and logical databases. Physical database design. Other systems features critical toperformance. Performance improvement in an operational database system. Conducting performance evaluation studies. Performance issues in conspicuous innovations.
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