for 1989
›
↑
↑
↑
H
?
for 1988
←
for 1989
→
1980s languages
↑
Late Cold War
↑
Fifth generation
↑
Explore languages searching for category and for year 1989
Aldat
⊕
1989
↓
↑
⊕
Business Data Processing
⊕
Information algebra
⊕
United States
Database language, based on extended algebra