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create table connection_types (
id int unsigned not null auto_incrememt,
name varchar(64) comment 'name of the connection such as network or power',
primary key (id)
) comment 'keeps names of different types of connections';
insert into connection_types( name ) values ('network');
insert into connection_types( name ) values ('power');
insert into connection_types( name ) values ('serial console');
create table connections (
id int unsigned not null auto_incrememt,
device1_id int unsigned not null references devices(id),
device2_id int unsigned not null references devices(id),
device1_port varchar(20) comment 'name of port on device1',
device2_port varchar(20) comment 'name of port on device2',
connection_type_id int unsigned not null references connection_types( id),
notes text comment 'any notes such as cable type/color',
primary key (id),
) comment 'makes connections between devices including power and network';