PostgreSQL 14 Internals Quiz

Created by Paul Sammy

PostgreSQL 14 Internals Chapter 3

A quiz to test the knowledge of those reading and learning from Postgres 14 Internals book by Egor Rogov, covering topics in Chapter 3.

1 / 10

Which 2 of the below represent transaction IDs used for row versioning?

2 / 10

virtual IDs exist only in PGDATA/pg_vxid when not cached?

3 / 10

The page Special Space is located at the start of the page with highest address

4 / 10

psql provides a special mode that allows you to continue a transaction after a failure?

5 / 10

If a transaction is read only which kind of Transaction ID is it allocated?

6 / 10

The page header is located in the highest address?

7 / 10

Which function can we use to find the current transaction ID?

8 / 10

If a transaction aborts, all page changes are reverted(rolled back) in place?

9 / 10

status of a subtransaction is written into CLOG?

10 / 10

To identify different versions of one and the same row, PostgreSQL marks each of them with which two value?

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