70-767 Schema Practice Questions
The free 70-767: Implementing a SQL Data Warehouse questions that deal with schema, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #3
3. When would you typically use a star schema?
Correct answer: A
Explanation
A star schema is used primarily in data warehousing to optimize database queries for analytical operations.
Question #6
6. Which is a key benefit of using a snowflake schema?
Correct answer: A
Explanation
The snowflake schema normalizes data into related tables, which can reduce storage costs and improve data integrity.
Question #9
10. What strategy can be employed to handle schema changes in a data warehouse?
Correct answer: C
Explanation
Schema evolution techniques enable the data warehouse to adapt to changes in data structure, allowing for smoother operations.
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