The great thing about new versions of SQL Server is the fact that they are packed full of new features but there some that don’t really get talked about much. I found out about a concept called lightw...
The selectivity of an index is defined as the fraction of rows in a table having the same value for the indexed key. A highly selective index has few rows for each index entry and an unselective inde...
Introduction
Materialized views have been used for several years and they are being improved by Oracle with every database version or release. Up to Oracle Database 12cR1 Oracle Materialized Views sup...
