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Databases Intermediate

What is JSONB?

PostgreSQL's binary JSON data type that stores JSON documents with indexing, querying, and manipulation capabilities.

JSONB stores JSON in a decomposed binary format, enabling indexing and efficient querying. Operators include -> (get element), ->> (get as text), @> (contains), and ? (key exists). GIN indexes make JSONB queries fast.

JSONB bridges relational and document databases — store structured data in tables and flexible/dynamic data in JSONB columns. Use cases include user preferences, API responses, metadata, and schema-less data alongside structured tables.

Related Terms

Crosstab Query
A query that transforms rows into columns, creating a pivot table view of aggregated data.
Database Proxy
A middleware server that sits between applications and databases, providing connection pooling, load balancing, and query routing.
NoSQL
A category of databases that store data in non-tabular formats, optimized for specific data models and access patterns.
EXPLAIN ANALYZE
A PostgreSQL command that shows the execution plan of a query along with actual runtime statistics for performance tuning.
Query Optimization
The process of improving database query performance through indexing, query rewriting, and schema design techniques.
JOIN
An SQL operation that combines rows from two or more tables based on a related column between them.
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