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Example of QBE query with joins, designed in Borland's Paradox database. 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]
This list includes SQL reserved words – aka SQL reserved keywords, [1] [2] as the SQL:2023 specifies and some RDBMSs have added. Reserved words in SQL and related products In SQL:2023 [ 3 ]
Community Development: project that creates and provides tools, processes, and advice to help open-source software projects improve their own community health; Cordova: mobile development framework; CouchDB: Document-oriented database; Apache Creadur Committee Rat: improves accuracy and efficiency when reviewing and auditing releases.
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 ...
IBM System R is a database system built as a research project at IBM's San Jose Research Laboratory beginning in 1974. [1] System R was a seminal project: it was the first implementation of SQL, which has since become the standard relational data query language.
Trino is an open-source distributed SQL query engine designed to query large data sets distributed over one or more heterogeneous data sources. [1] Trino can query data lakes that contain a variety of file formats such as simple row-oriented CSV and JSON data files to more performant open column-oriented data file formats like ORC or Parquet [2] [3] residing on different storage systems like ...
Version 5 includes the first iteration of the Greenplum project strategy of merging PostgreSQL later versions back into Greenplum and is based on PostgreSQL version 8.3 up from the previous version 8.2. [26] Version 5 also introducing the General Availability of the GPORCA Optimizer [27] for cost based optimization of SQL designed for big data.
FQL enables you to use a SQL-style interface to query the data exposed by the Graph API. It provides advanced features not available in the Graph API. [3] Gellish English is a language that can be used for queries in Gellish English Databases, for dialogues (requests and responses) as well as for information modeling and knowledge modeling; [4]