DB2 Optimization and Access Paths: Understanding The Basics [Part 1]

DB2 Optimization and Access Paths: Understanding The Basics Part 1: Scans Versus Indexed Access By Craig S. Mullins The DB2 optimizer can choose from a variety of different techniques as it creates optimal access paths for each SQL statement. These techniques range from a simple series of sequential reads to much more complicated strategies such as using multiple indexes to…