IBM SQL/DS - Citizendia

SQL/DS (Structured Query Language/Data System) was IBM's first commercial implementation for its mainframe computers of a DBMS (Database Management System) built around the SQL language. International Business Machines Corporation abbreviated IBM and nicknamed "Big Blue", is a multinational Computer Technology Mainframes (often colloquially referred to as Big Iron) are Computers used mainly by large organizations for critical applications typically bulk data A computer is a Machine that manipulates data according to a list of instructions. A database management system ( DBMS) is Computer software designed for the purpose of managing Databases DBMSes may use any of a variety of Data models

SQL/DS is an (imperfect) software implementation of Dr. E. F. Codd's Relational Model for data management. Edgar Frank "Ted" Codd ( August 23, 1923 – April 18, 2003) was a British computer scientist who while working The relational model for Database management is a Database model based on first-order predicate logic, first formulated and proposed in 1969 by Edgar

SQL/DS ran on the DOS/VSE and VM/CMS operating systems. z/VSE (Virtual Storage Extended is an Operating system for IBM mainframe computers the latest one in the DOS/360 lineage, which originated in 1965 CP/CMS|History of CP/CMS VM (often VM/CMS) refers to a family of IBM Virtual machine Operating systems used on IBM System/370 It came to market in the early 1980s. A little later, IBM also introduced DB2, another SQL-based DBMS, this one for the MVS operating system. DB2 is one of IBM 's families of Relational database management system (RDBMS (or as IBM now calls it data server software products within IBM's broader Information Multiple Virtual Storage, more commonly called MVS, was the most commonly used Operating system on the System/370 and System/390 IBM The two products have coexisted since then; however, SQL/DS was rebranded as "DB2 for VM and VSE" in the late 1990s.

See also