Context: As computers grew in speed and capability, a number of general-purpose database systems emerged; by the mid-1960s a number of such systems had come into commercial use. Interest in a standard began to grow, and Charles Bachman, author of one such product, the Integrated Data Store (IDS), founded the "Database Task Group" within CODASYL, the group responsible for the creation and standardization of COBOL. In 1971 the Database Task Group delivered their standard, which generally became known as the "CODASYL approach", and soon a number of commercial products based on this approach entered the market.

Question: When were DBMSs first used commercially?
Answer: mid-1960s

Question: What group discovered COBOL?
Answer: Database Task Group

Question: Why was COBOL created?
Answer: Interest in a standard

Question: What was the standard protocol called?
Answer: CODASYL approach

Question: When was the standard protocol completed?
Answer: 1971

Question: When were DBMSs last used commercially?
Answer: Unanswerable

Question: What group destroyed COBOL?
Answer: Unanswerable

Question: Why was COBOL removed?
Answer: Unanswerable

Question: When was the standard taken away?
Answer: Unanswerable

Question: What was the name of the incomplete standard?
Answer: Unanswerable