Brief History of Database Systems
- 1940's, 50's Initial use of computers
as calculators. Limited data, focus on
algorithms. Science, military applications.
- 1960's Business uses. Organizational
data, customer data, sales, inventory,
accounting, etc. File system based, high
emphasis on applications programs to extract
and assimilate data. Larger amounts of data,
relatively simple calculations.
IBM's IMS/360 Version 1 released in 1968.
- 1970's CODASYL systems proposed and built.
The relational model. Data
separated into individual tables. Related by
keys. Initially required heavy system
resources. Examples: Oracle, Sybase, Informix,
Digital RDB, IBM DB2.
But FORTRAN and punched cards are still being used by many
- 1980's Microcomputers - the IBM PC,
Apple Macintosh. Database program such as
DBase (sort of), Paradox, FoxPro, MS Access.
Individual user can crate, maintain small
- Late- 1980's Local area networks.
Workgroups sharing resources such as files,
Client/Server Database resides on a
central server, applications programs run on
client PCs attached to the server over a LAN.
- 1990's Internet and World Wide Web make
databases of all kinds available from a single
type of client - the Web Browser.
The Human Genome Project embraces this technology
Some of the material on this page has been extracted from a
Database Management Systems Course
, Baruch College, City University of New York.
Copyright, 1997, 1998 Richard Holowczak
Table of Contents.