What is the primary key for customer?

Question

Notice that the customer number column is the primary key of the customers table and that the same column is a foreign key in the orders table. PRIMARY KEY: (CUSTOMER_ID))CUSTOMER_ID: INTEGER NOT NULLBALANCE: DECIMAL(6,2) NOT NULL DEFAULT ‘0.00’ADDRESS1: VARCHAR(50) NOT NULL

What is the primary key of the customer table?

Often, a unique identification number, such as an ID number or a serial number or code, serves as a primary key in a table. For example, you might have a Customers table where each customer has a unique customer ID number. The customer ID field is the primary key.

Is customer name a primary key?

Customer_ID alone cannot be a primary key as a single customer can place more than one order thus more than one rows of same Customer_ID value.

What is a primary key example?

A primary key is a column -- or a group of columns -- in a table that uniquely identifies the rows in that table. For example, in the table below, CustomerNo, which displays the ID number assigned to different customers, is the primary key.

What would be the primary key in the customers and orders table?

Notice that the customer number column is the primary key of the customers table and that the same column is a foreign key in the orders table. The customer number column in orders therefore serves to relate orders to the customers to which they belong.

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