Understand UUID: 128-bit unique identifiers (16 bytes vs 36 bytes VARCHAR), globally unique, no collisions, use for distributed systems

Master Network Types: INET (IP address with optional netmask), CIDR (network address), MACADDR (MAC address), operators for network queries

Learn Range Types: INT4RANGE, TSRANGE, DATERANGE for storing ranges, operators (@>, &&, <<), use for scheduling, pricing tiers

Understand Geometric Types: POINT, LINE, POLYGON for GIS data, operators for distance/containment, use with PostGIS extension

Master ENUM Types: Custom enumerated types (status, priority), type-safe, efficient storage (4 bytes), better than VARCHAR with CHECK

Learn Composite Types: Custom row types, nested structures, use for complex data, better than multiple columns or JSONB

Understand UUID: 128-bit unique identifiers (16 bytes vs 36 bytes VARCHAR), globally unique, no collisions, use for distributed systems

Master Network Types: INET (IP address with optional netmask), CIDR (network address), MACADDR (MAC address), operators for network queries

Learn Range Types: INT4RANGE, TSRANGE, DATERANGE for storing ranges, operators (@>, &&, <<), use for scheduling, pricing tiers

Understand Geometric Types: POINT, LINE, POLYGON for GIS data, operators for distance/containment, use with PostGIS extension

Master ENUM Types: Custom enumerated types (status, priority), type-safe, efficient storage (4 bytes), better than VARCHAR with CHECK

Learn Composite Types: Custom row types, nested structures, use for complex data, better than multiple columns or JSONB