PostgreSQL Schema Design FAQs

Question 1

Why does this skill recommend BIGINT over SERIAL?

Accepted Answer

The skill prefers 'GENERATED ALWAYS AS IDENTITY' (BIGINT) because it is SQL-standard compliant and provides better internal management of sequences compared to the legacy SERIAL macro.

Question 2

What is the recommended approach for case-insensitive text search?

Accepted Answer

The skill suggests using expression indexes on LOWER(col) for plain ASCII or non-deterministic collations for locale/accent handling, rather than relying on legacy CITEXT or VARCHAR limits.

Question 3

Does this skill provide guidance on indexing JSON data?

Accepted Answer

Yes, it provides specific patterns for using JSONB combined with GIN indexes to allow for efficient querying of semi-structured data within a relational environment.

Question 4

When should I use partitioning according to these rules?

Accepted Answer

Partitioning is recommended for very large tables (typically over 100M rows) or when data maintenance tasks like bulk pruning or rotation are required, using declarative RANGE, LIST, or HASH strategies.

Question 5

How does this skill handle timezones in PostgreSQL?

Accepted Answer

It strictly enforces the use of TIMESTAMPTZ for event data to ensure all timestamps are stored accurately in UTC, avoiding common pitfalls associated with the 'timestamp without time zone' type.

PostgreSQL Schema Design

Key Features

Use Cases

PostgreSQL Schema Design

Key Features

Use Cases