What are the characteristics of relational data language?

Relational data languages ​​include: relational algebra language, relational calculus language, and SQL.

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Features:

Relational algebra language: Use operations on relationships to express query requirements.

Relational calculus language: Use predicates to express query requirements.

Structured Query Language (SQL): It is a relational data language that integrates query, data definition language, data manipulation language, and data control language. It is a highly procedural language.

The common feature of these relational data languages ​​is that the language has complete expression capabilities, is a non-procedural set operation language, has strong functions, and can be embedded in high-level languages.

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