Operation Integer CreateSchemaTable ( system_name, ip_add, port_pp, pc_pp), in Class generalMethod

Documentation
this function creates all the tables given a subystem:
will create
device,devicetype, connectivity tables and their constraints
if ip_add=1->create ip_ethernet table (default 0)
if port_pp=1->create port_properties table (default 0)
if pc_pp=1-> create pc_properties table (default 0)
return 0 if successful