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Data definition language

In the context of SQL, data definition language (DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. DDL statements are similar to a computer programming language for defining data structures, especially database schemas. Common examples of DDL statements include CREATE, ALTER, and DROP. If you see a .ddl…

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Data definition language

Nodes45
Edges44
Triples12
Avg. degree1.96
Density0.044444
Components1

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Data definition language

Top relations

related to history · 9
Data definition language → Codasyl, DDL, Later, SQL, SQL-92, SQL/Schemata, Structured Query Language, The, These

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Important terminology

sql ddl database data language statement table tables create statements used rdbms alter example drop delete schema syntax query truncate

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
tablesinstance ofis a syntax for creating and modifying database objects0.80text
indicesinstance ofis a syntax for creating and modifying database objects0.80text
and usersinstance ofis a syntax for creating and modifying database objects0.80text
Data definition languagerelated to historyThe0.60section
Data definition languagerelated to historyCodasyl0.60section
Data definition languagerelated to historyLater0.60section
Data definition languagerelated to historyStructured Query Language0.60section
Data definition languagerelated to historySQL0.60section
Data definition languagerelated to historySQL-920.60section
Data definition languagerelated to historyThese0.60section
Data definition languagerelated to historySQL/Schemata0.60section
Data definition languagerelated to historyDDL0.60section

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    Min side: 3
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