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

index row headers like table row headers contain xmin and xmax fields?

2 / 10

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

3 / 10

What does an Item Pointer contain?

choose 3

4 / 10

at any one time Postgres can have several versions of a row?

5 / 10

A page along with its tuples is read into the buffer cache with compression transformations to enhance cache efficiency?

6 / 10

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

7 / 10

CLOG Pages are never cached in memory?

8 / 10

Page free space can often become fragmented?

9 / 10

Postgres table physical data files are always cross compatible across platforms?

10 / 10

When a row is created, its xmin value is set to the transaction ID of which command?

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