This tutorial starts while using introduction to Data Warehousing, Defination involving OLAP, difference between Data warehouse plus the OLTP Database, Objectives of data warehousing along with data flow.

Integrated Data Warehousing technology of business functions; technological advances in transmission and hard drive of data; and powerful database management tools have showed new possibilities of data manipulation along with analysis. Business managers are eager to check out the repositories of current and historical facts to distinguish trends and patterns in the encapsulate and hoof of business. They wish to mine data and use them when deciding to take intelligent business decisions. In this wording, industries are increasingly focusing on files warehousing, Online Analytical Processing (OLAP), and other related technologies.

What's the Difference?

‘Data warehouse’ and ‘OLAP’ are terms which are often used interchangeably. Actually they refer to two different pieces of a decision support system. While data in a data warehouse is composed of the historical data of the organization stored for user analysis, OLAP is a technology that enables a data warehouse to be applied effectively for online analysis using sophisticated analytical queries. The differences between OLAP and files warehouse is tabulated below for easier understanding:

Data Warehouse

Data from different data sources is stored in a very relational database for end use investigation

Data from different data sources is stored in a very relational database for end use investigation Data is organized in summarized, aggregated, issue oriented, non volatile patterns.

Data is often a data warehouse is consolidated, flexible variety of data Supports analysis of data but won't support online analysis of data.

On-line Advance Seamless Analytics Processing

A tool to check and analyze your data in the data warehouse using analytical concerns.

A tool which helps organizes data inside data warehouse using multidimensional models involving data aggregation and summarization.

Supports the data analytics instantly and enables online analysis of files with speed and flexibility.

Ralph Kimball the co-founder in the data warehousing concept has defined your data warehouse as a “"a copy involving transaction data specifically structured for question and analysis”.

Both definitions highlight specific popular features of the data warehouse. The former definition focuses on the structure and organization in the data and the latter focuses upon the application of the data. However Free Articles, a listing of the features of a data warehouse would necessarily add the aspects highlighted in both these descriptions.

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