This XPath expression is used with other SQL in the stored procedure to return the sum of the payable amount due on the date supplied as input.

These statements also define the kinds of variables and parameters the programmer can choose and the type of value that the code will return when an expression accesses the procedure or function.

Many Western countries have retained the formulation of "Relative Concealment" in the criminal law and procedure law which concrete expression to Privilege of Relatives Witness.