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Question:  What is the flow of loading data into fact & dimensional tables? 



Answer: Fact table - Table with Collection of Foreign Keys corresponding to the Primary Keys in Dimensional table. Consists of fields with numeric values.
Dimension table - Table with Unique Primary Key.

Load - Data should be first loaded into dimensional table. Based on the primary key values in dimensional table, the data should be loaded into Fact table.



January 01, 2006 02:53:29 #1
 srinivas vuligonda   Member Since: Visitor    Total Comments: N/A 
RE: What is the flow of loading data into fact & d...
 

Here is the sequence of loading a datawarehouse.

1. The source data is first loading into the staging area, where data cleansing takes place.

2. The data from staging area is then loaded into dimensions/lookups.

3.Finally the Fact tables are loaded from the corresponding source tables from the staging area.
     

 

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