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CompTIA Data+ DA0-001 Exam: Understanding Database Schemas and Dimensions
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CompTIA Data+ DA0-001 Exam: Understanding Database Schemas and Dimensions
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18 Questions

1. In the star schema, dimension tables _____ have sub-dimension tables.
2. The following figure is an example of what type of schema?
Images
3. An organization has data about customers that used to and still have a relationship with the organization. One customer announces that it has a new CIO, and this information is updated in the organization's data warehouse. This is an example of which of the following
4. SCD type 0 represents which of the following
5. True or false: The star schema is suitable for a data warehouse with complex relationships..
6. The star schema is characterized by which of the following
7. SCD type 4 relies on creating _____ to reflect historical data.
8. Slowly changing dimensions (SCDs) is seen as a(n) _____ by data engineers, administrators, and consultants.
9. _____ developed the concept of dimensional modeling based on fact and dimension tables.
10. An employee joins the organization and undergoes orientation, where he learns about the organization’s past. The date the organization was established would be SCD type _____.
11. There can be _____, _____, and _____ database schemas.
12. True or false: Data dimensions do not necessarily change periodically.
13. A fact table has which of the following types of columns?
14. The snowflake schema _____ the data stored.
15. The _____ schema has multiple dimension and sub-dimension tables.
16. A schema represents the __________ of a database.
17. SCD type 3 relies on creating _____ to reflect historical data..
18. True or false: A data warehouse is meant to process only single-dimensional queries..

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