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200-530 · Question #438

Symonds works as a Database Administrator for Blue Well Inc. The company uses an Oracle database. The database contains a table named Employees. Following is the structure of the table: EmployeeID…

The correct answer is C. Self join. Zend 200-530 Exam

Databases & SQL

Question

Symonds works as a Database Administrator for Blue Well Inc. The company uses an Oracle database. The database contains a table named Employees. Following is the structure of the table: EmployeeID NUMBER (5) PRIMARY KEY EmployeeName VARCHAR2 (35) NOT NULL Salary NUMBER (9, 2) NOT NULL Commission NUMBER (4, 2) DepartmentID NUMBER (5) Symonds queries the Employees table with the following statement: SELECT e.EmployeeName, m.Salary FROM Employees e, Employees m WHERE e.EmployeeID = m.EmployeeID; Which of the following types of joins is used in the statement?

Options

  • AOuter join
  • BEquijoin
  • CSelf join
  • DCross join

How the community answered

(35 responses)
  • A
    9% (3)
  • B
    3% (1)
  • C
    77% (27)
  • D
    11% (4)

Explanation

Zend 200-530 Exam

Topics

#self join#SQL joins#table aliases#equijoin

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