Cdc Interview Questions

10 real Cdc questions asked in live technical interviews — each with a model answer. Updated weekly.

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These Cdc interview questions were captured from real interviews by candidates using Assisting AI. Each links to a full model answer. For real-time help during your own interview, get Assisting AI from ₹500/day.

What are the features in Snowflake? How do you implement CDC in Snowflake?🟡 Medium · Conceptual · Asked 22×If we have an RDS instance as the source and we decide not to use DMS due to cost concerns, how can we capture CDC data from the RDS instance?🟡 Medium · Conceptual · Asked 1×What are common data pipeline issues inside Change Data Capture (CDC)?🟡 Medium · Conceptual · Asked 1×Many of us handle incremental data loading. What was the daily data volume of yours? Did you use CDC watermarking, merge, append, or any other approach?🟡 Medium · Conceptual · Asked 1×What are the advantages of CDC?🟢 Easy · Conceptual · Asked 1×Why do we need to go back to CDC for mapping validation when we already have millions of records and are validating them in the raw zone?🟡 Medium · Conceptual · Asked 1×Why do we need to go back to CDC for automated test cases when we already have curated data loaded into the curated zone?🟡 Medium · Conceptual · Asked 1×How would you design an ETL pipeline that uses AWS DMS CDC to capture change data from an Oracle database, stores the raw change data as JSON in a raw zone, and then processes it into a target system?🔴 Hard · Conceptual · Asked 1×Explain how you performed CDC from Oracle using DMS. Provide an example with a specific table.🟡 Medium · Conceptual · Asked 1×Downstream consumers require incremental changes from a Delta table that includes deletes and updates. You must deliver ordered change data capture (CDC) from version checkpoints. Which Delta feature should you use?🟡 Medium · Conceptual · Asked 1×

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