Example image of eyePlorer eyePlorer map for 'SQL': Data Database Programming language Relational algebra Relational database management system Database schema Edgar F. Codd Relational model Donald D. Chamberlin IBM Raymond F. Boyce IBM System R Patent IBM Almaden Research Center Hawker Siddeley Trademark United Kingdom Ingres (database) Massachusetts Institute of Technology University of California, Berkeley QUEL query languages Central Intelligence Agency Federal government of the United States Oracle Corporation United States Navy Oracle Database VAX 38 DS IBM DB2 Null (SQL) Column (database) Row (database) Scalar (computing) Table (database) Ternary logic Semicolon Whitespace (computer science) Select (SQL) Database management system Query optimizer Query plan From (SQL) Join (SQL) Where (SQL) SQL Having (SQL) Order by (SQL) Existential quantification Universal quantification