Record level triggers in Nosql database service table.

User_PAE47

Hi, We have a use case of delete records with TTL in Nosql database service table and send an email on deletion. But we donot find solution of how to trigger function on delete a record in Nosql database service table (https://www.oracle.com/in/database/nosql/). Please help with it. Thanks.

Tim Blackman-Oracle

There is no notification to applications when a TTL record is deleted because the TTL time has expired.

The TTL mechanism is designed for efficiency, and one consequence of that is that it does the minimum amount of work to delete expired records. Note that NoSQL Database does not have hooks to tell applications when records are deleted, even when they are deleted explicitly. It would be possible to detect explicit deletions using the Streams API, but the Streams API does not provide notification for TTL expirations either.

User_PAE47

@Tim Blackman-Oracle Thanks to help. Can we use Oracle nosql stream api for handle the use case? https://docs.oracle.com/en/database/other-databases/nosql-database/20.3/streams/introduction.html

Tim Blackman-Oracle

No, unfortunately, the Streams API will not help in this case. The Streams API does not deliver any stream operations for TTL deletions, so you would not see these.