Question { 7658 }

What is check constraint?

Answer

example of check constraint

CREATE TABLE Customer_Details(
Cust_ID Number(5) CONSTRAINT Nnull1 NOT NULL
CONSTRAINT Ccheck1 CHECK( Cust_ID BETWEEN 101 AND 105),
Cust_Last_Name VarChar2(20) CONSTRAINT Nnull2 NOT NULL,
Cust_Mid_Name VarChar2(4),
Cust_First_Name VarChar2(20),
Account_No Number(5) CONSTRAINT Pkey1 PRIMARY KEY,
Account_Type VarChar2(10) CONSTRAINT Nnull3 NOT NULL,
Bank_Branch VarChar2(25) CONSTRAINT Nnull4 NOT NULL,
Cust_Email VarChar2(30)
);