SYNOPSISDD *opendd(void);
DESCRIPTION
Create a new data definition structure. This is used when creating
new tables to specify the field names and types. It needs to be
filled with calls to putdd() before creating the table. Once the
table has been created the structure can be closed with a call to
closedd().
Returns a valid pointer if successful and NULL otherwise.
SEE ALSO
closedd(), putdd(), createdbtbl()