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Exam Code: 1Z0-047
Exam Name: Oracle Oracle Database SQL Expert 1Z0-047
Free One year updates to match real exam scenarios, 100% pass and refund Warranty.
Updated: 2013-08-29
1Z0-047 (Oracle Database SQL Expert) Free Demo Download: http://www.it-tests.com/1Z0-047.html
NO.1 Evaluate the following SQL statement: ALTER TABLE hr.emp SET UNUSED (mgr_id); Which
statement is true regarding the effect of the above SQL statement?
A.Any synonym existing on the EMP table would have to be re-created.
B.Any constraints defined on the MGR_ID column would be removed by the above command.
C.Any views created on the EMP table that include the MGR_ID column would have to be dropped and
re-created.
D.Any index created on the MGR_ID column would continue to exist until the DROP UNUSED
COLUMNS command is executed.
Answer:B
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NO.2 View the Exhibit and examine the structure of the MARKS_DETAILS and MARKStables. Which is the
best method to load data from the MARKS_DETAILStable to the MARKStable?
A.Pivoting INSERT
B.Unconditional INSERT
C.Conditional ALL INSERT
D.Conditional FIRST INSERT
Answer:A
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NO.3 Evaluate the following CREATE SEQUENCE statement: CREATE SEQUENCE seq1 START WITH 100
INCREMENT BY 10 MAXVALUE 200 CYCLE NOCACHE; The sequence SEQ1 has generated numbers
up to the maximum limit of 200. You issue the following SQL statement: SELECT seq1.nextval FROM
dual; What is displayed by the SELECT statement?
A.1
B.10
C.100
D.an error
Answer:A
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NO.4 Which two statements are true regarding the execution of the correlated subqueries? (Choose two.)
A.The nested query executes after the outer query returns the row.
B.The nested query executes first and then the outer query executes.
C.The outer query executes only once for the result returned by the inner query.
D.Each row returned by the outer query is evaluated for the results returned by the inner query.
Answer:A D
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NO.5 Evaluate the CREATE TABLE statement: CREATE TABLE products (product_id NUMBER(6)
CONSTRAINT prod_id_pk PRIMARY KEY, product_name VARCHAR2(15)); Which statement is true
regarding the PROD_ID_PK constraint?
A.It would be created only if a unique index is manually created first.
B.It would be created and would use an automatically created unique index.
C.It would be created and would use an automatically created nonunique index.
D.It would be created and remains in a disabled state because no index is specified in the command.
Answer:B
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NO.6 View the Exhibit and examine the description of the CUSTOMERS table. You want to add a constraint
on the CUST_FIRST_NAME column of the CUSTOMERS table so that the value inserted in the column
does not have numbers. Which SQL statement would you use to accomplish the task?
A.ALTER TABLE CUSTOMERS ADD CONSTRAINT cust_f_name
CHECK(REGEXP_LIKE(cust_first_name,'
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