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Showing posts with label star schema. Show all posts
Showing posts with label star schema. Show all posts

Monday, March 23, 2015

Data Warehouse, Data Mart, ETL, OLAP, OLTP, Dimensions, Schema, Star & snowflake schema

1.             Definition of data warehousing?
ΓΌ   Data warehouse is a Subject oriented, Integrated, Time variant, Non volatile collection of data in support of management's decision making process.