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ILLUSTRA
1992
1995
QUEL
System R
IBM
INteractive Graphics REtrieval System
INGRES
UC Berkeley
1973
Ingres Co
CA
Ingres r3
1979-1982
1994
2004
SQL
1978
1979
INFORMIX
1984
NonStop SQL
1984-1987
1985-1988
Postgres
1993 V4.2
1989 V1
1997-04-03
Agatha Christie
PGDG
Postgres95
SQL
1994 V5
PostgreSQL
1996 V6
2005 V8
MS SQL
1993
1995
Sybase
1992
1987
ASE
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$$$
$$$
$$$
$$$
$$$
1983
ORACLE
RDb/VMS
1994
SDL, RSI 1979
1984
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CODD 1969,1970
Relational model
SQL/DS
DB2
2001
1983
$$$
1981
1974-1975