create
____________________
heladeria
____________________
heladeria
____________________
table
clientes
(
idcliente_clie
integer
check
(
____________________
)
____________________
key
,
nit
integer
unique
,
nombre
char
(
30
)
not
____________________
,
apellido
____________________
(
30
)
,
direccion
char
(
40
)
,
telefono
____________________
,
)
;
create
____________________
factura
(
idfactura
integer
____________________
(
idfactura>0
)
primary
____________________
,
idclient_fac
integer
____________________
clientes
(
____________________
)
,
idcamerero_fac
integer
,
idmesa_fac
integer
,
fecha_fac
____________________
,
)
;
