This article explores the internals of Oracle9i indexing; reviews the standard b-tree index, index-only tables, and how these indexes may increase the speed of Oracle SQL queries.

A SQL Server expert gives his take on the absolute, No. 1, very worst thing IT pros can do when it comes to indexing. Consultant, author and Microsoft MVP Denny Cherry travels the world helping ...

The DICTIONARY tables component is specified in the FROM clause of a SELECT statement. DICTIONARY is a reserved libref for use only in PROC SQL. Data from DICTIONARY tables are generated at run time.

I need to delete a number of rows from a table. Should I have indexing on for the columns that I'm using to choose what to delete?

I've got a stored procedure that runs a FTI query against a table. If there's no activity on the server for a while then the first time that procedure is called it times out; subsequent calls work ...