DEF $DOMAIN = VARCHAR(90) NOT NULL DEFAULT '';
INFO $DOMAIN = 'website domain name';
DEF $IP = VARCHAR(15) NOT NULL DEFAULT '';
INFO $IP = 'IP4 Address';

# etc, then, when creating tables, use
CREATE TABLE vhosts (
    domain $DOMAIN_DEF PRIMARY KEY,
    ip $IP_DEF
);

##</code><code>##

# pseudo
ANALYZE DATA WHERE DEFINITION IS $DOMAIN_DEF;

##</code><code>##

# pseudo
UNLESS ERR REDEFINE $DOMAIN_DEF = VARCHAR(80) NOT NULL 
DEFAULT '';