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“Change Data Capture (CDC)” in Information Technology

13 questions across 1 technology.

Information Technology

13 questions in 1 technology

#QuestionTechnologyTopicLevel
1How do you enable Change Data Capture on a specific table, and what does that process actually create? SQL Server › Change Data Capture (CDC)SQL ServerChange Data Capture (CDC)Intermediate
2How do you query the change data captured for a table to find out exactly what changed within a specific time range? SQL Server › Change Data Capture (CDC)SQL ServerChange Data Capture (CDC)Intermediate
3What is Change Data Capture in SQL Server, and what problem does it solve? SQL Server › Change Data Capture (CDC)SQL ServerChange Data Capture (CDC)Beginner
4How is Change Data Capture different from using triggers to track changes to a table? SQL Server › Change Data Capture (CDC)SQL ServerChange Data Capture (CDC)Intermediate
5How do you disable Change Data Capture on a table or an entire database once it is no longer needed? SQL Server › Change Data Capture (CDC)SQL ServerChange Data Capture (CDC)Intermediate
6How would you use Change Data Capture to build a near real time data synchronization pipeline between an operational database and a data warehouse? SQL Server › Change Data Capture (CDC)SQL ServerChange Data Capture (CDC)Advanced
7What are the performance and storage considerations to keep in mind before enabling Change Data Capture on a very high volume table? SQL Server › Change Data Capture (CDC)SQL ServerChange Data Capture (CDC)Advanced
8How do you use the OUTPUT clause together with a MERGE statement to capture which rows were inserted, updated, or deleted? SQL Server › Merge Statement (Upsert)SQL ServerMerge Statement (Upsert)Intermediate
9What are the three main types of replication in SQL Server, and how do they differ? SQL Server › ReplicationSQL ServerReplicationBeginner
10What is a trigger in SQL Server, and what kinds of events can cause one to run automatically? SQL Server › TriggersSQL ServerTriggersBeginner
11How do you access the old and new values of a row that was just updated from inside a trigger? SQL Server › TriggersSQL ServerTriggersIntermediate
12What are some alternatives to using a trigger for tasks like auditing or enforcing business rules, and when might those alternatives be preferable? SQL Server › TriggersSQL ServerTriggersIntermediate
13What are the performance implications of using triggers heavily on a busy, high transaction volume table? SQL Server › TriggersSQL ServerTriggersAdvanced