IntegrationBeginnercdcintegration
What is Change Data Capture (CDC)?
Real World Scenario
Data warehouse needs near-real-time Salesforce Account changes. You explain CDC basics.
Expected Answer
• CDC publishes change events when records are created, updated, deleted, or undeleted
• Events include changed fields and metadata for downstream sync
• External subscribers consume via Pub/Sub API or middleware connectors
• Reduces inefficient polling of Salesforce for changes
• Enable CDC per object in Setup—impacts event volume and licensing considerations
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Change events show new values and changed field mask; combine with Field History for older values if needed.
Architect Perspective
CDC answers "how external systems know SF data changed"—memorize that framing.