A_____________is an interface through which data can be  entered ,edited and viewed  in a database.

Which of these proprieties is used  to specify whether a zero – length string (‘ ‘ ) is a valid entry in a field of the table?

Which of these data types can contain combination of letters, numbers, special characters, etc., up to 255 characters ?

Which of these can be used to create a table?

Which of these represents a required letter from A to Z ?

Which of these represents an optional digit including ‘+’  or ‘-‘ sign?

Which of these is the validation rule for checking the employee who joined after 1^st jan 1981 (DOJ)?

Which of these creates a list of selected values from the  table or a list of values provided by the user?