at it is implementation-dependent whether cursors
   are sensitive to concurrent updates of the underlying data by default.  In
   <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>, cursors are insensitive by default,
   and can be made sensitive by specifying <TT
CLASS="LITERAL"
>FOR UPDATE</TT
>.  Other
   products may work differently.
  </P
><P
>   The SQL standard allows cursors only in embedded
   <ACRONYM
CLASS="ACRONYM"
>SQL</ACRONYM
> and in modules. <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>
   per