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Tuesday, 7 March 2017

What is Enterprisewide Data Warehouse ?


By on 01:00:00


  1. Large scale implementation  
  2. Scopes the entire business  
  3. Data from all subject areas  
  4. Developed incrementally  
  5. Single source of enterprise wide data  
  6. Synchronized enterprise wide data  
  7. Single distribution point to dependent data marts

User Expectations

What is Enterprise wide Data Warehouse ?

Data Warehouse Vocabulary



Grain of Data - Granularity

Grain is defined as the level of detail of data captured in the data warehouse. More the detail, higher the granularity and vice-versa

•Fact table

It is similar to the transaction table in an OLTP system. It stores the facts or measures of the business.

Eg: SALES, ORDERS

•Dimension table

It is similar to the master table in an OLTP system. It stores the textual descriptors of the business.

Eg: CUSTOMER, PRODUCT

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