N116545"
>E.8.3.4.1. Constraints</A
></H4
><P
></P
><UL
><LI
><P
>        Allow <A
HREF="ddl-constraints.html"
><TT
CLASS="LITERAL"
>CHECK</TT
></A
>
        constraints to be declared <TT
CLASS="LITERAL"
>NOT VALID</TT
> (&Aacute;lvaro
        Herrera)
       </P
><P
>        Adding a <TT
CLASS="LITERAL"
>NOT VALID</TT
> constraint does not cause the table to
        be scanned to verify that existing rows meet the constraint.
        Subsequently, newly added or updated rows are checked.
        Such cons