ACTUAL ORACLE 1Z0-071 EXAM QUESTIONS IN DIFFERENT FORMATS

Actual Oracle 1z0-071 Exam Questions In Different Formats

Actual Oracle 1z0-071 Exam Questions In Different Formats

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Oracle Database SQL Sample Questions (Q154-Q159):

NEW QUESTION # 154
You must find the number of employees whose salary is lower than employee 110.
Which statement fails to do this?

  • A. SELECT COUNT (*)
    FROM employees
    JOIN employees a
    ON e. salary<
    a. salary
    WHERE a. employee_ id= 110;
  • B. SELECT COUNT (* )
    FROM employees
    WHERE salary < (SELECT salary FROM employees WHERE employee id =
    110) ;
  • C. SELECT COUNT (* )
    FROM employees e
    WHERE e. salary < (SELECT a. salary FROM employees a WHERE e. employee_ id = 110);
  • D. SELECT COUNT (*)
    FROM employees e
    JOIN (SELECT salary FROM employees WHERE employee_ id= 110) a
    ON e. salary< a. salary;

Answer: C


NEW QUESTION # 155
Which statements are correct regarding indexes? (Choose all that apply.)

  • A. For each DML operation performed, the corresponding indexes are automatically updated.
  • B. Indexes should be created on columns that are frequently referenced as part of any expression.
  • C. A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically attempts to creates a unique index.
  • D. When a table is dropped, the corresponding indexes are automatically dropped.

Answer: A,C,D

Explanation:
References:
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/


NEW QUESTION # 156
Which statement fails to execute successfully?
A)

B)

C)

D)

  • A. Option D
  • B. Option A
  • C. Option B
  • D. Option C

Answer: C


NEW QUESTION # 157
View and Exhibit and examine the structure and data in the INVOICEtable.

Which two statements are true regarding data type conversion in query expressions? (Choose two.)

  • A. CONCAT(inv_amt, inv_date): requires explicit conversion
  • B. inv_amt = '0255982': requires explicit conversion
  • C. inv_date > '01-02-2008': uses implicit conversion
  • D. inv_date = '15-february-2008':uses implicit conversion
  • E. inv_no BETWEEN '101' AND '110': uses implicit conversion

Answer: D,E


NEW QUESTION # 158
Evaluate the following SELECT statement and view the Exhibit to examine its output:

SELECT constraint_name, constraint_type, search_condition, r_constraint_name, delete_rule, status FROM user_constraints WHERE table_name = ORDERS
Which two statements are true about the output? (Choose two.)

  • A. The STATUS column indicates whether the table is currently in use.
  • B. The column DELETE_RULE decides the state of the related rows in the child table when the corresponding row is deleted from the parent table.
  • C. In the second column, indicates a check constraint.
  • D. The R_CONSTRAINT_NAME column gives the alternative name for the constraint.

Answer: B,C


NEW QUESTION # 159
......

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