Composite index (database)

A database composite index or multi-column index is an index that is based on several columns.^[1]

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v t e Database management systems
Types	Object-oriented comparison Relational list comparison Key–value Column-oriented list Document-oriented Wide-column store Graph NoSQL NewSQL In-memory list Multi-model comparison Cloud Blockchain-based database
Concepts	Database ACID Armstrong's axioms Codd's 12 rules CAP theorem CRUD Null Candidate key Foreign key Superkey Surrogate key Unique key
Objects	Relation table column row View Transaction Transaction log Trigger Index Stored procedure Cursor Partition
Components	Concurrency control Data dictionary JDBC XQJ ODBC Query language Query optimizer Query rewriting system Query plan
Functions	Administration Query optimization Replication Sharding
Related topics	Database models Database normalization Database storage Distributed database Federated database system Referential integrity Relational algebra Relational calculus Relational model Object–relational database Transaction processing
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