Question: While working for IBM in the mid-1960's, what did Ted Codd develop to improve upon the hierarchical storage model? Question 1 options: Database Stored Procedures

While working for IBM in the mid-1960's, what did Ted Codd develop to improve upon the hierarchical storage model?

Question 1 options: Database Stored Procedures

Entity-Relationship Diagram

Fishbone Diagram

Relational Database

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