Glossary - O

OLAP
Online Analytical Processing, decision support software that allows users to quickly analyse information that has been summarised.

Operating System
A suite of programs which controls the operation of the computer and application programs. It may include the scheduling of jobs according to a priority system, control of multi-programming, and allocation and storage and control of system software.

Oracle™ Database
A relational database management system (DBMS) from Oracle, which runs on many platforms.