for 1973
›
↑
↑
↑
H
?
for 1972
←
for 1973
→
1970s languages
↑
High Cold War
↑
Fourth generation
↑
Explore languages searching for category and for year 1973
SEQUEL
⊕
1973
↓
↑
⊕
Business Data Processing
⊕
RDBMs
⊕
United States
Limited expression language for data querying