Ab Initio Data Warehousing Question:

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What is the difference between rollup and scan?

Ab Initio Interview Question
Ab Initio Interview Question

Answer:

By using rollup we cant generate cumulative summary records for that we will be using scan.

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Describe the Grant/Revoke DDL facility and how it is implemented?Describe the elements you would review to ensure multiple scheduled batch jobs do not collide with each other?