Computing · 1974

SQL

A plain query language for relational data.

Donald Chamberlin and Raymond Boyce at IBM created SEQUEL for the System R project. SQL became an ANSI standard in 1986 and remains the most widely used data language.

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What it built on 1

Relational model 1970

Related measurements

The dashed line marks when it first worked.

Cost of memory and storage Latest: Memory: 1.09k $/TB (2023) Source: Our World in Data