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OLAP

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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.
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