Composite index (database)

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

## References

1. ↑ "MySQL 5.0 Reference Manual". http://dev.mysql.com/doc/refman/5.0/en/multiple-column-indexes.html.

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Database management systems

Types|

* Object-oriented
* comparison
* Relational
* comparison
* Document-oriented
* Graph
* NoSQL
* NewSQL

Concepts|

* Database
* ACID
* Armstrong's axioms
* 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

Related topics|

* Database models
* Database normalization
* Database storage
* Distributed database
* Federated database system
* Referential integrity
* Relational algebra
* Relational calculus
* Relational database
* Relational model
* Object-relational database
* Transaction processing

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