Oracle 1z0-051 Free Demo Questions Answers

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1z0-051 Dumps - Oracle Database SQL Fundamentals
I Practice Exam Questions
1z0-051 Practice Test Question Answers Oracle PDF
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• Certification Provider Oracle
• Exam Code 1z0-051
• Exam Name Oracle Database SQL Fundamentals
  I Exam
• Total Questions 292 Questions and Answers
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QUESTION 1
Which statements are correct regarding indexes?
(Choose all that apply.) A. For each data
manipulation language (DML) operation performed,
the corresponding indexes are automatically
updated. B. A nondeferrable PRIMARY KEY or
UNIQUE KEY constraint in a table automatically
creates a unique index. C. A FOREIGN KEY
constraint on a column in a table automatically
creates a non unique key D. When a table is
dropped, the corresponding indexes are
automatically dropped Correct Answer ABD
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QUESTION 2
You issue the following command to drop the
PRODUCTS table SQLgtDROP TABLE products What is
the implication of this command? (Choose all that
apply.) A. All data in the table are deleted
but the table structure will remain B. All data
along with the table structure is deleted C. All
views and synonyms will remain but they are
invalidated D. The pending transaction in the
session is committed E. All indexes on the table
will remain but they are invalidated Correct
Answer BCD
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QUESTION 3
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 Correct Answer
BDE
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QUESTION 4
Where can sub queries be used? (Choose all that
apply) A. field names in the SELECT statement
B. the FROM clause in the SELECT statement C.
the HAVING clause in the SELECT statement D. the
GROUP BY clause in the SELECT statement E. the
WHERE clause in only the SELECT statement F. the
WHERE clause in SELECT as well as all DML
statements Correct Answer ABCF
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QUESTION 5
You need to calculate the number of days from 1st
Jan 2007 till date Dates are stored in the
default format of dd-mm-rr. Which two SQL
statements would give the required output?
(Choose two.) A. SELECT SYSDATE -
TO_DATE('01/JANUARY/2007') FROM DUAL B. SELECT
TO_DATE(SYSDATE,'DD/MONTH/YYYY')-'01/JANUARY/2007'
FROM DUAL C. SELECT SYSDATE -
TO_DATE('01-JANUARY-2007') FROM DUAL D. SELECT
SYSDATE - '01-JAN-2007' FROM DUAL E. SELECT
TO_CHAR(SYSDATE,'DD-MON-YYYY')-'01-JAN-2007' FROM
DUAL Correct Answer AC
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QUESTION 6
Which are /SQLPlus commands? (Choose all that
apply.) A. INSERT B. UPDATE C. SELECT D.
DESCRIBE E. DELETE F. RENAME Correct Answer D
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QUESTION 7
Which two statements are true regarding working
with dates? (Choose two.) A. The default
internal storage of dates is in the numeric
format B. The RR date format automatically
calculates the century from the SYSDATE function
but allows the user to enter the century if
required C. The default internal storage of
dates is in the character format D. The RR date
format automatically calculates the century from
the SYSDATE function and does not allow the user
to enter the century Correct Answer AB
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QUESTION 8
Which two statements are true regarding single
row functions? (Choose two.) A. They can be
nested only to two levels B. They always return
a single result row for every row of a queried
table C. Arguments can only be column values or
constant D. They can return a data type value
different from the one that is referenced E.
They accept only a single argument Correct
Answer BD
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QUESTION 9
Examine the statement Create synonym emp for
hr.employees What happens when you issue the
statement? A. An error is generated. B. You
will have two identical tables in the HR schema
with different names. C. You create a table
called employees in the HR schema based on you
EMP table. D. You create an alternative name for
the employees table in the HR schema in your own
schema. Correct Answer D
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QUESTION 10
Which two statements are true regarding
constraints? (Choose two.) A. A constraint can
be disabled even if the constraint column
contains data B. A constraint is enforced only
for the INSERT operation on a table C. A foreign
key cannot contain NULL values D. All
constraints can be defined at the column level as
well as the table level E. A columns with the
UNIQUE constraint can contain NULL values
Correct Answer AE
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