Which of the statements is/are true for data validation?

Which of the statements is/are true for data validation?
A .  Data Validation can enforce data integrity as well as make a field required in the page layout
B .  Data Validation can prevent duplication of records
C .  Data Validation run on the client machine after the user clicks the Save button
D .  Data Validation rules are not enforced when using API & import operations
E .  Validation rules can be activated / deactivated by the user

View Answer

Answer: A,B