Question

what do you understand by the required property of field in MS Access​

Answer 1

You can use the Required property to specify whether a value is required in a field. If this property is set to Yes, when you enter data in a record, you must enter a value in the field or in any control bound to the field, and the value cannot be Null.
For example, you might want to be sure that a LastName control has a value for each record. When you want to permit Null values in a field, you must not only set the Required property to No but, if there is a ValidationRule property setting, it must also explicitly state " validationrule Or Is Null".



Note :-
The Required property doesn't apply to AutoNumber fields.