a) Edgar Frank Codd
b) Charles Bachman
c) Charles Babbage
d) Sharon B. Codd
- Charles Bachman developed the Integrated Data Store (IDS) in the 1960s, which is widely recognized as the first DBMS.
- His work laid the foundation for modern database systems.
While Edgar Codd is also a significant figure in database history, he is primarily known for developing the relational database model, which came later.