Online Analytical Processing
OLAP is an acronym for Online Analytical Processing. OLAP performs multidimensional analysis ([data-analysis]) of business data and provides the capability for complex calculations, trend analysis, and sophisticated [data-modelling].
It is the foundation for many kinds of business applications for Business Performance Management, Planning, Budgeting, Forecasting, Financial Reporting, Analysis, Simulation Models, Knowledge Discovery, and Data Warehouse Reporting. OLAP enables end-users to perform ad hoc analysis of data in multiple dimensions, thereby providing the insight and understanding they need for better decision making.