Pass4sure give you the most current prime quality 1Z0-051 ebook training questions for the customers, we assurance ensuring your success with the 1st test simply with our assessment braindumps, in case in some way people are unsuccessful the actual Pass4sure 1Z0-051 ebook assessment with the newbie, we won't solely organise the whole reimbursement in your case.
When you purchase our Pass4sure 1Z0-051 ebook assessment together with 1Z0-051 ebook, you may have everything is important intended for completing the test with all of analyze guide that may be always up to par.
Improve 1Z0-051 Simple Questions Latest Practice Test Questions VCE PDF Dumps
Qustion No. 1
- (Topic 1)
Examine the structure of the STUDENTS table:
You need to create a report of the 10 students who achieved the highest ranking in the course INT SQL and who completed the course in the year 1999.
Which SQL statement accomplishes this task?
A. SELECT student_ id, marks, ROWNUM "Rank"
FROM students
WHERE ROWNUM <= 10
AND finish_date BETWEEN '01-JAN-99' AND '31-DEC-99
AND course_id = 'INT_SQL'
ORDER BY marks DESC;
B. SELECT student_id, marks, ROWID "Rank"
FROM students
WHERE ROWID <= 10
AND finish_date BETWEEN '01-JAN-99' AND '31-DEC-99'
AND course_id = 'INT_SQL'
ORDER BY marks;
C. SELECT student_id, marks, ROWNUM "Rank"
FROM (SELECT student_id, marks
FROM students
WHERE ROWNUM <= 10
AND finish_date BETWEEN '01-JAN-99' AND '31-DEC-
99'
AND course_id = 'INT_SQL'
ORDER BY marks DESC);
D. SELECT student_id, marks, ROWNUM "Rank”
FROM (SELECT student_id, marks
FROM students
WHERE (finish_date BETWEEN ’01-JAN-99 AND ’31-DEC-99’
AND course_id = ‘INT_SQL’
ORDER BY marks DESC)
WHERE ROWNUM <= 10 ;
E. SELECTstudent id, marks, ROWNUM “Rank”
FROM(SELECT student_id, marks
FROM students
ORDER BY marks)
WHEREROWNUM <= 10
ANDfinish date BETWEEN ’01-JAN-99’ AND ’31-DEC-99’
ANDcourse_id = ‘INT_SQL’;
Answer: D
Qustion No. 2
- (Topic 2)
Which substitution variable would you use if you want to reuse the variable without prompting the user each time?
A. &
B. ACCEPT
C. PROMPT
D. &&
Answer: D
Explanation:
To reuse the variable without prompting the user each time you can use && substitution
variable.
Incorrect Answers
A:This substitution variable will prompt the user each time.
B:ACCEPT is command, not substitution variable. It used to define more accurate or
specific prompt or when you want more output to display as the values are defined.
C:PROMPT is part of the ACCEPT command, it is not a variable.
OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 165-173
Chapter 4: Sub queries
Qustion No. 3
- (Topic 1)
Which two statements are true about sequences created in a single instance database? (Choose two.)
A. CURRVAL is used to refer to the last sequence number that has been generated
B. DELETE <sequencename> would remove a sequence from the database
C. The numbers generated by a sequence can be used only for one table
D. When the MAXVALUE limit for a sequence is reached, you can increase the MAXVALUE limit by using the ALTER SEQUENCE statement
E. When a database instance shuts down abnormally, the sequence numbers that have been cached but not used would be available once again when the database instance is restarted
Answer: A,D
Explanation:
Gaps in the Sequence
Although sequence generators issue sequential numbers without gaps, this action occurs
independent of a commit or rollback. Therefore, if you roll back a statement containing a
sequence, the number is lost.
Another event that can cause gaps in the sequence is a system crash. If the sequence
caches values in memory, those values are lost if the system crashes.
Because sequences are not tied directly to tables, the same sequence can be used for
multiple tables.
However, if you do so, each table can contain gaps in the sequential numbers.
Modifying a Sequence
If you reach the MAXVALUE limit for your sequence, no additional values from the sequence are allocated and you will receive an error indicating that the sequence exceeds the MAXVALUE. To continue to use the sequence, you can modify it by using the ALTER SEQUENCE statement To remove a sequence, use the DROP statement:
DROP SEQUENCE dept_deptid_seq;
Qustion No. 4
- (Topic 1)
Which three statements are true regarding the data types in Oracle Database 10g/11g? (Choose three.)
A. The BLOB data type column is used to store binary data in an operating system file
B. The minimum column width that can be specified for a VARCHAR2 data type column is one
C. A TIMESTAMP data type column stores only time values with fractional seconds
D. The value for a CHAR data type column is blank-padded to the maximum defined column width
E. Only One LONG column can be used per table
Answer: B,D,E
Explanation:
LONG Character data in the database character set, up to 2GB. All the functionality of LONG (and more) is provided by CLOB; LONGs should not be used in a modern database, and if your database has any columns of this type they should be converted to CLOB. There can only be one LONG column in a table. DVARCHAR2 Variable-length character data, from 1 byte to 4KB. The data is stored in the database character set. The VARCHAR2 data type must be qualified with a number indicating the maximum length of the column. If a value is inserted into the column that is less than this, it is not a problem: the value will only take up as much space as it needs. If the value is longer than this maximum, the INSERT will fail with an error. VARCHAR2(size) Variable-length character data (A maximum size must be specified: minimum size is 1; maximum size is 4,000.) BLOB Like CLOB, but binary data that will not undergo character set conversion by Oracle
Net.
BFILE A locator pointing to a file stored on the operating system of the database server.
The size of the files is limited to 4GB.
TIMESTAMP This is length zero if the column is empty, or up to 11 bytes, depending on
the precision specified.
Similar to DATE, but with precision of up to 9 decimal places for the seconds, 6 places by
default.
Qustion No. 5
- (Topic 2)
Examine the structure of the EMP_DEPT_VU view:
Which SQL statement produces an error?
A. SELECT *
FROM emp_dept_vu;
B. SELECT department_id, SUM(salary)
FROM emp_dept_vu
GROUP BY department_id;
C. SELECT department_id, job_id, AVG(salary)
FROM emp_dept_vu
GROUP BY department_id, job_id;
D. SELECT job_id, SUM(salary)
FROM emp_dept_vu
WHERE department_id IN (10,20)
GROUP BY job_id
HAVING SUM(salary) > 20000;
E. None of the statements produce an error; all are valid.
Answer: E
Explanation: Explanation: None of the statements produce an error. Incorrect Answer: AStatement will not cause error BStatement will not cause error CStatement will not cause error DStatement will not cause error
All the Oracle 1Z0-051 dumps practice questions which with precise as well as verified answers are developed and updated simply by our advanced professionals in the discipline of web. Taking the actual Other Oracle Certification 1Z0-051 ebook simulated test you will get a substantial mark which guarantee the success. Our own Oracle Other Oracle Certification 1Z0-051 free practice exam braindumps have fantastic value as well as high top quality which guarantee you a new passing score, or you will get the purchasing costs back. Whilst if you don't wish to the refund, we can easily send anyone another Other Oracle Certification 1Z0-051 ebook dumps pertaining to free. We all hope you get over the Oracle certification exam smoothly.
You could find higher analysis on 1Z0-051 dumps at Braindumps Collection.