Compatibility with multiple data types: PostgreSQL is compatible with several data types:

Structured: Arrays, date and time, Universally Unique Identifiers (UUIDs), and range

Customizations: Custom types, and composite

Primitives: String, integer, numeric, and Boolean

Geometry: Polygon, circle, line, and point

Document: XML, JSON/JSONB, and key-value

Supports different features of SQL: It offers the various features of SQL, such as the following:

Multiple indexing, such as B-tree and expressions

SQL subselects

Complex SQL queries

Multi-Version Concurrency Control (MVCC):

Table partitioning

Data integrity compatibility: It also offers data integrity, which includes the following:

Primary keys

Foreign keys

Explicit locks

Advisory locks

UNIQUE

NOT NULL

Secure database: It adheres to standard security protocols, which includes the following:

Authentications such as Lightweight Directory Access Protocol (LDAP), SCRAM-SHA-256, and the Security Support Provider Interface (SSPI)

Supports column and row-level security

Highly extensible: It offers several features, making it modifiable, such as the following:

JSON/SQL path expressions

Stored procedures and functions

Compatibility with foreign data wrappers