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  2. Query language - Wikipedia

    en.wikipedia.org/wiki/Query_language

    A query language, also known as data query language or database query language (DQL), is a computer language used to make queries in databases and information systems. In database systems, query languages rely on strict theory to retrieve information. [1] A well known example is the Structured Query Language (SQL).

  3. SQL - Wikipedia

    en.wikipedia.org/wiki/SQL

    SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...

  4. Query by Example - Wikipedia

    en.wikipedia.org/wiki/Query_by_Example

    Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL. [1] It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions.

  5. Declarative programming - Wikipedia

    en.wikipedia.org/wiki/Declarative_programming

    Well-known examples of declarative domain-specific languages (DSLs) include the yacc parser generator input language, QML, the Make build specification language, Puppet's configuration management language, regular expressions, Datalog, answer set programming and a subset of SQL (SELECT queries, for example).

  6. Category:Query languages - Wikipedia

    en.wikipedia.org/wiki/Category:Query_languages

    العربية; বাংলা; Bosanski; Čeština; Ελληνικά; Español; Euskara; فارسی; Français; Galego; 한국어; Հայերեն; Bahasa Indonesia

  7. List of programming languages - Wikipedia

    en.wikipedia.org/wiki/List_of_programming_languages

    This is an index to notable programming languages, in current or historical use. Dialects of BASIC, esoteric programming languages, and markup languages are not included. A programming language does not need to be imperative or Turing-complete, but must be executable and so does not include markup languages such as HTML or XML, but does include domain-specific languages such as SQL and its ...

  8. List of programming languages by type - Wikipedia

    en.wikipedia.org/wiki/List_of_programming...

    System software is computer software designed to operate and control the computer hardware, and to provide a platform for running application software. System software includes software categories such as operating systems, utility software, device drivers, compilers, and linkers. Examples of system languages include:

  9. RDF query language - Wikipedia

    en.wikipedia.org/wiki/RDF_query_language

    Metalog combines querying with reasoning and has an English like syntax. Algae is a query language developed by the W3C that adds reactive rules, [10] also called actions, that determine for instance whether an Algae expression is a data query or a data update. Other examples of RDF Query languages include RDFDBQL. [11]