UUID, Bytea, and Bitstring
Explore the use of UUIDs, bytea, and bitstring data types in PostgreSQL. Understand how UUIDs provide unique identifiers, the role of the uuid-ossp extension for generation, and the benefits and limitations of storing binary data with bytea and bitstring types in transactional environments.
Universally unique identifier: UUID
A Universally Unique Identifier (UUID) is a 128-bit number used to identify information in computer systems. The term Globally Unique Identifier (GUID) is also used. PostgreSQL implements support for UUID, both for storing and processing them and also with the uuid-ossp extension for generating them.
The UUID extension
If we need to generate UUIDs from ...