Historical Roots of Database Systems
Developed to overcome limitations of file systems, developed initially on mainframe computers in late 60s and early 70s - a typical early DBMS cost $100,000 (many are still in use)
First general databases were created for General Electric Company (GEC) - Integrated Data Store (IDS), designed to run on GEC machines; B.F. Goodrich ported IDS to IBM 360 - became dominant until 1980s
As PCs gained popularity (1980s), single-user, personal databases developed; at present, most database technology is used in workgroups