📄️ 10. Constraints and Indexes
Enforce data integrity and improve query performance with PostgreSQL constraints and indexes.
📄️ Primary and Foreign Keys
Model relational integrity in PostgreSQL with primary keys, foreign keys, and performance-aware referential design (including indexing FKs). Focus: Primary and Foreign Keys.
📄️ Column and Table Constraints
Enforce PostgreSQL data quality with NOT NULL, UNIQUE, CHECK, and DEFAULT constraints, plus safe rollout patterns for large tables. Focus: Column and Table Constraints.
📄️ Index Strategy and Maintenance
Design PostgreSQL indexes for real query patterns (B-tree, GIN, BRIN, partial/expression/covering) and maintain them with evidence using EXPLAIN (ANALYZE). Focus: Index Strategy and Maintenance.