You have an Azure subscription that contains an Azure SQL database. The database contains a table named table1 that uses partitioned columnstores. You need to configure table1 to meet the following requirements:
* Each partition must be compressed
* The compression ratio must be maximized.
* You must be able to index the compressed data.
What should you use?
Correct Answer: C
Basic Concept: This question tests performance optimization for SQL workloads, including Query Store, automatic tuning, index/statistics maintenance, and engine-level resource behavior.
Why C is Correct: columnstore archival compresssion is related to operational monitoring or tuning, but it must match the exact signal needed: query history, resource utilization, wait/blocking detail, or automatic remediation. This fits the case because the requested outcome is: You need to configure table1 to meet the following requirements: * Each partition must be compressed * The compression ratio must be maximized.
The selected feature addresses that outcome directly rather than relying on a workaround.
Why A is Wrong: page compression is related to operational monitoring or tuning, but it must match the exact signal needed: query history, resource utilization, wait/blocking detail, or automatic remediation. It would produce a different operational signal than the one needed to investigate, alert, or tune the workload in this question.
Why B is Wrong: columnstore compression is related to operational monitoring or tuning, but it must match the exact signal needed: query history, resource utilization, wait/blocking detail, or automatic remediation. It does not expose the required metric, query history, wait/blocking signal, or tuning mechanism; using it would not give the administrator the evidence requested.
Why D is Wrong: GZIP compression is related to operational monitoring or tuning, but it must match the exact signal needed: query history, resource utilization, wait/blocking detail, or automatic remediation. It would produce a different operational signal than the one needed to investigate, alert, or tune the workload in this question.