CODASYL
Proper noun
Meaning
CODASYL
(computing, historical) Acronym of Conference/Committee on Data Systems Languages.
Examples
1960s, navigational DBMS further Basic structure of navigational CODASYL database model The introduction of the term database coincided with the availability of direct-access storage (disks and drums) from the mid-1960s onwards.
COBOL Grace Murray Hopper at the UNIVAC keyboard, c. 1960 In the spring of 1959, a two-day conference known as the Conference on Data Systems Languages ( CODASYL ) brought together computer experts from industry and government.
Instead of records being stored in some sort of linked list of free-form records as in CODASYL, Codd's idea was to use a " table " of fixed-length records, with each table used for a different type of entity.
Codd's ideas were establishing themselves as both workable and superior to CODASYL, pushing IBM to develop a true production version of System R, known as SQL/DS, and, later, Database 2 (DB2).
IMS was generally similar in concept to CODASYL, but used a strict hierarchy for its model of data navigation instead of CODASYL's network model.
In 1971, the Database Task Group delivered their standard, which generally became known as the "CODASYL approach", and soon a number of commercial products based on this approach entered the market.