Table Relationship Types: One-to-One, One-to-Many, Many-to-Many
Relational databases connect tables through three fundamental relationship types: one-to-one, one-to-many, and many-to-many. Each follows the third normal form (3NF) principles with specific key and constraint strategies.
1. One-to-One Relationship
One entity is linked to exactly one instance of another entity. The primary table holds an id as ...
Posted on Sat, 10 Oct 2026 16:49:46 +0000 by bombayduck
Using UUIDv7 as Database Primary Keys
A persistent misconception in software engineering is that universally unique identifiers (UUIDs) are inherently unsuitable for database primary keys. The rationale stems from the fact that standard random UUIDs cause index fragmentation and frequent B-tree page splits during inserts due to their lack of sequential ordering.UUID SpecificationsD ...
Posted on Sat, 09 May 2026 17:42:27 +0000 by akelavlk