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.

The most important performance-tuning technique available is having the needed indexes created on the tables to ensure that the SQL Server database engine is able to get the data that it needs to ...

Microsoft’s Bradley Ball dives into the inner workings of SQL Server indexing to help developers and DBAs speak the same ...

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?

SQL Server 2014 introduces clustered columnstore indexes, which become the primary storage method for the table. These can be updated, but cannot be combined with any other indexes.