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Snippet from Wikipedia: Relational database

A relational database (RDB) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. A database management system used to maintain relational databases is a relational database management system (RDBMS). Many relational database systems are equipped with the option of using SQL (Structured Query Language) for querying and updating the database.

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Database management system:

• Object-oriented
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• Relational
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  • comparison
• Key-value
• Column-oriented
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• Document-oriented
• Wide column store
• Graph
• NoSQL
• NewSQL
• In-memory
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• Multi-model
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• Cloud

Database Concepts:

• Database
• ACID
• Armstrong's axioms
• Codd's 12 rules
• CAP theorem
• CRUD
• Null
• Candidate key
• Foreign key
• Superkey
• Surrogate key
• Unique key

Database Objects:

• Relation
  • table
  • column
  • row
• View
• Transaction
• Transaction log
• Trigger
• Index
• Stored procedure
• Cursor
• Partition

Database Components:

• Concurrency control
• Data dictionary
• JDBC
• XQJ
• ODBC
• Query language
• Query optimizer
• Query rewriting system
• Query plan

Database 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 database
• Relational model
• Object-relational database
• Transaction processing

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