Create table LineaCredito(
IdLinea number,
IdCuenta number,
Saldo number,
constraint lineaCredito_pk primary key (IdLinea)enable,
CONSTRAINT fk_lineaCredito FOREIGN KEY (IdCuenta)REFERENCES Cuenta(IdCuenta)
)

Create table UsoLinea(
IdUso number,
IdLinea number,
Fecha Date,
Monto number,
constraint usoLinea_pk primary key (IdUso)enable,
CONSTRAINT fk_usoLinea FOREIGN KEY (IdLinea)REFERENCES LineaCredito(IdLinea)
)
create table Cliente(
IdCliente number,
constraint cliente_pk primary key (IdCliente )enable)

create table Cuenta(
IdCuenta number,
IdCliente number,
Saldo number,
constraint Cuenta_pk primary key (IdCuenta)enable,
CONSTRAINT fk_Cuenta FOREIGN KEY (IdCliente)REFERENCES Cliente(IdCliente )
)

Create table Giro(
IdGiro number,
IdCuenta number,
Fecha Date,
Monto number,
constraint Giro_pk primary key (IdGiro )enable,
CONSTRAINT fk_Giro FOREIGN KEY (IdCuenta )REFERENCES Cuenta(IdCuenta ))