of 0 or 1 integer'' and ``set of 0 or 1 real''. These conditions
evaluate to false when the column is empty, and otherwise as described
in RFC 7047 for integer and real types.
-.
-.IP "6. IANA Considerations"
-\fBovsdb\-server\fR currently defaults to its historical port number
-6632. Future versions will adopt IANA-assigned port 6640 as default.
.SH "SEE ALSO"
.