OL AP O N L I N E A N A LY T I C A L P R O C E S S I N G Online Analytical Processing Server is based on the multidimensional data model. It allows managers, and analysts to get an insight of the information through fast, consistent, and interactive access to information. OLAP INFORMATION • Involves historical processing of information. • OLAP systems are used by knowledge workers such as executives, managers and analysts. • Useful in analyzing the business. • Contains historical data. • Number or users is in hundreds. • Number of records accessed is in millions. • Database size is from 100 GB to 1 TB OLAP MIXED CONCEPTS & BUSINESS INTELLIGENCE DATA WAREHOUSE • OLAP is a key component of organizing traditional data warehouses • The OLAP concept was described in 1993 by Edgar Codd, a well-known database researcher and author of a relational data model. • In 1995, on the basis of the requirements set forth by Codd, the socalled FASMI test was formulated including the following requirements for applications for multivariate analysis: – the ability to access any information you need, regardless of its volume and storage location. – multidimensional conceptual representation of data, including full support for hierarchies and multiple hierarchies OLAP IS NOT A TECHNOLOGY, BUT AN IDEOLOGY. Cities Order sum Supplier Years
