<P> In computer science , data validation is the process of ensuring that a program operates on clean , correct and useful data . It uses routines , often called `` validation rules '' `` validation constraints '' or `` check routines '' , that check for correctness , meaningfulness , and security of data that are input to the system . The rules may be implemented through the automated facilities of a data dictionary , or by the inclusion of explicit application program validation logic . </P>
<P> In computer science , data validation is the process of ensuring that a program operates on clean , correct and useful data . It uses routines , often called `` validation rules '' `` validation constraints '' or `` check routines '' , that check for correctness , meaningfulness , and security of data that are input to the system . The rules may be implemented through the automated facilities of a data dictionary , or by the inclusion of explicit application program validation logic . </P>
how do you validate data in a database
how do you validate data in a database
routines , often called `` validation rules '' `` validation constraints '' or `` check routines ''
routines , often called `` validation rules '' `` validation constraints '' or `` check routines ''