O

Object Orientation (OO)

The perspective that systems should be constructed from objects, which themselves may be aggregations of smaller objects.

On-Line Analytical Processing (OLAP)

On-line retrieval and analysis of data to reveal business trends and statistics not directly visible in the data directly retrieved from a data warehouse. Also known as multidimensional analysis.

Operational Datastore (ODS)

A database structure that is a repository for near real-time operational data rather than long term trend data.

Operational Data Source

The current operational system which contains the source data to be extracted, transformed, and transported to the data warehouse database objects.

Operational System

A system which supports the operations of the client’s business. These systems may be mission critical systems or support systems.