Microsoft Certified: Azure Data Fundamentals Practice Mode

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• 2

  a. Incorrect. Key/Value stores are generally schema-less and do not focus on enforcing constraints like relational databases do. b. Correct. Key/Value stores are optimized for fast, straightforward lookups based on keys. They are ideal for retrieving values quickly without complex queries. c. Incorrect. Key/Value stores are not designed for performing joins, as they do not have a relational structure. Joins are typically handled by relational databases. d. Incorrect. While some Key/Value stores support transactions, they are not as robust as relational databases in handling complex transactions and typically focus on simple retrievals rather than transactional operations.

• 1

  Simple lookups

• 10

  according to the link in description: The Answer is: simple lookups. Key/value stores are highly optimized for applications performing simple lookups, but are less suitable if you need to query data across different key/value stores. Key/value stores are also not optimized for querying by value. the reference: https://docs.microsoft.com/en-us/azure/architecture/guide/technology-choices/data-store-overview#keyvalue-stores