INTERVIEW QUESTIONS DATA WAREHOUSING DATA WAREHOUSING BASICS DETAILS

Question: What are the steps to build the data warehouse?

Answer: As far I know...<br><br>Gathering bussiness requiremnts<br>Identifying Sources<br>Identifying Facts<br>Defining Dimensions<br>Define Attribues<br>Redefine Dimensions & Attributes<br>Organise Attribute Hierarchy & Define Relationship<br>Assign Unique Identifiers<br>Additional convetions:Cardinality/Adding ratios<br>

As far I know...<br><br>Gathering bussiness requiremnts<br>Identifying Sources<br>Identifying Facts<br>Defining Dimensions<br>Define Attribues<br>Redefine Dimensions & Attributes<br>Organise Attribute Hierarchy & Define Relationship<br>Assign Unique Identifiers<br>Additional convetions:Cardinality/Adding ratios<br> Source: CoolInterview.com

Gather requirements,<br>Identify Source tables,<br>Identify Destination tables,<br>Data modelling<br>Source to target matrix preparation,<br>ETL flow preparation and scheduling,<br>Reporting Source: CoolInterview.com

as far as i know

Gathering requirement,
planning architechture,
designing logical and physical model (defining dimensions ,facts , measures , mapping source to target ) , migrating data (ETL ) testing and optimisation Source: CoolInterview.com

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