MacAims |
⊕
1968
|
↓
↑
⊕
Specialised Languages
|
⊕
RDBMs
|
⊕
United States
|
Set-based data retrieval language |
QBE |
⊕
1975
|
|
⊕
RDBMs
|
⊕
United States
|
Query By Example |
Query by Example |
⊕
1969
|
↓
↑
⊕
Business Data Processing
|
⊕
RDBMs
|
⊕
United States
|
Database Query language |
Relational Algebra |
⊕
1969
|
|
⊕
RDBMs
|
⊕
United States
|
|
Relational Calculus |
⊕
1969
|
|
⊕
RDBMs
|
⊕
United States
|
|
SDDL |
⊕
1969
|
↓
↑
⊕
Business Data Processing
|
⊕
RDBMs
|
⊕
United States
|
Stored-Data Definition Language |
SEQUEL |
⊕
1973
|
↓
↑
⊕
Business Data Processing
|
⊕
RDBMs
|
⊕
United States
|
Limited expression language for data querying |
SQL |
⊕
1975
|
|
⊕
RDBMs
|
⊕
United States
|
|
SQUARE |
⊕
1975
|
|
⊕
RDBMs
|
⊕
United States
|
|
TOTAL |
⊕
1968
|
|
⊕
RDBMs
|
⊕
United States
|
Cincom's 4gl database language |