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Question
For years, QuickTax, Inc. has helped small businesses manage their taxes. The management wants a database to keep track of clients, employees, and jobs. Managers need to keep track of client names, addresses, contact persons, phone numbers, and email addresses. They also need to track the employee's social security numbers, names, and birth dates. Also, the company needs to be able to keep track of the data on each job an employee performs for each of their clients.Client
In Oracle, the script line setting up the primary key, would be which of the following?
a) Primary key email char(30)
b) Email char(20) as primary key
c) Email char(10) primary key
d) Email char (30) primary key
Answer
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