Databases Intermediate

What is Database Index Types?

Different index structures (B-tree, Hash, GIN, GiST, BRIN) optimized for various query patterns and data types.

Database index types serve different purposes: B-tree indexes handle equality and range queries efficiently and are the default in most databases. Hash indexes are optimized for equality comparisons only. GIN (Generalized Inverted Index) indexes excel at full-text search and JSONB queries in PostgreSQL. GiST (Generalized Search Tree) indexes support geometric data and range types. BRIN (Block Range Index) indexes are compact indexes ideal for naturally ordered data like timestamps. Choosing the right index type can improve query performance by orders of magnitude.

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Related Terms

ORM (Object-Relational Mapping)

A technique that lets you interact with a database using object-oriented code instead of writing raw SQL queries.

The default index type in most databases that organizes data in a balanced tree structure for efficient searching, sorting, and range queries.

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

Database Constraint

Rules enforced by the database to maintain data integrity, including NOT NULL, UNIQUE, CHECK, PRIMARY KEY, and FOREIGN KEY.

An open-source, in-memory data store used as a database, cache, message broker, and queue with sub-millisecond response times.

A category of databases that store data in non-tabular formats, optimized for specific data models and access patterns.

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