Concept:Changing the value of an existing record in a database is known as updation.Explanation:When a record already exists and its data is changed or replaced with a new value, the operation is called updation.Insertion means adding a completely new record to the database.Deletion means removing an existing record from the database.Retrieval means reading or fetching data from the database without changing it.Since the question describes giving an existing record a new value, the correct term is updation.Answer:A. updation