Question 300
An ingestion platform administers continuously replicated order and inventory tables. Engineers have applied Add that authorized table to the CDC publication and refresh gateway metadata. Which result establishes the required behavior: An updated source table is missing from a configured publication?
Explanation
Correct Answer
The acceptance criterion for “An updated source table is missing from a configured publication” is Changes for the newly included table flow into its intended target; this is the expected evidence after Add that authorized table to the CDC publication and refresh gateway metadata.
Incorrect Answers
The pipeline authenticates as the restricted service identity, not admin would demonstrate the separate action Create a dedicated least-privilege replication identity for the UC connection, which addresses “An administrator uses root database credentials inside the production ingestion pipeline.” It does not verify the requirement “An updated source table is missing from a configured publication” following Add that authorized table to the CDC publication and refresh gateway metadata.
This signal belongs to the adjacent case “The database ingestion user lacks permissions to read the required tables,” whose remedy is Grant only the documented replication and source-read privileges. The observed result for the present requirement is Changes for the newly included table flow into its intended target.
Replication slot lag and WAL retention stay below the approved threshold would demonstrate the separate action Monitor replication lag and control WAL retention and slot lifecycle, which addresses “An idle PostgreSQL logical replication slot retains WAL indefinitely and threatens source disk.” It does not verify the requirement “An updated source table is missing from a configured publication” following Add that authorized table to the CDC publication and refresh gateway metadata.