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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.

Related Terms

ETL (Extract, Transform, Load)
A data pipeline process that extracts data from sources, transforms it into a suitable format, and loads it into a destination system.
Stored Procedure
A precompiled collection of SQL statements stored in the database that can be executed as a single unit.
Replication
The process of copying and maintaining database data across multiple servers for redundancy, failover, and read scaling.
Deadlock
A situation where two or more transactions permanently block each other by each holding locks that the other needs.
Connection Pool
A cache of database connections that can be reused, avoiding the overhead of creating new connections for each request.
Time-Series Database
A database optimized for storing and querying timestamped data points like metrics, sensor readings, and event logs.
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