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NO.1 Which three tasks can be performed using SQL functions built into Oracle
Database?
A. Displaying a date in a nondefault format
B. Finding the
number of characters in an expression
C. Substituting a character string in a
text expression with a specified string
D. Combining more than two columns or
expressions into a single column in the output
Answer: A,B,C
NO.2 In
the customers table, the CUST_CITY column contains the value 'Paris' for
the
CUST_FIRST_NAME 'Abigail'.
Evaluate the following query:
What would
be the outcome?
A. Abigail PA
B. Abigail Pa
C. Abigail IS
D. An
error message
Answer: B
NO.3 View the Exhibit for the structure of the
student and faculty tables.
You need to display the faculty name followed by
the number of students handled by the faculty at
the base
location.
Examine the following two SQL statements:
Which statement is
true regarding the outcome?
A. Only statement 1 executes successfully and
gives the required result.
B. Only statement 2 executes successfully and
gives the required result.
C. Both statements 1 and 2 execute successfully
and give different results.
D. Both statements 1 and 2 execute successfully
and give the same required result.
Answer: D
NO.4 Examine the types
and examples of relationships that follow:
1.One-to-one a) Teacher to
students
2.One-to-many b) Employees to Manager
3.Many-to-one c) Person to
SSN
4.Many-to-many d) Customers to products
Which option indicates the
correctly matched relationships?
A. 1-a, 2-b, 3-c, and 4-d
B. 1-c, 2-d,
3-a, and 4-b
C. 1-c, 2-a, 3-b, and 4-d
D. 1-d, 2-b, 3-a, and
4-c
Answer: C
NO.5 Examine the structure proposed for the transactions
table:
Which two statements are true regarding the creation and storage of
data in the above table
structure?
A. The CUST_STATUS column would give an
error.
B. The TRANS_VALIDITY column would give an error.
C. The
CUST_STATUS column would store exactly one character.
D. The
CUST_CREDIT_LIMIT column would not be able to store decimal values.
E. The
TRANS_VALIDITY column would have a maximum size of one character.
F. The
TRANS_DATE column would be able to store day, month, century, year, hour,
minutes,
seconds, and fractions of seconds
Answer:
B,C
Explanation:
VARCHAR2(size)Variable-length character data (A maximum
size must be specified:
minimum size is 1; maximum size is 4, 000.)
CHAR
[(size)] Fixed-length character data of length size bytes (Default and minimum
size
is 1; maximum size is 2, 000.)
NUMBER [(p, s)] Number having
precision p and scale s (Precision is the total number of
decimal digits and
scale is the number of digits to the right of the decimal point;
precision
can range from 1 to 38, and scale can range from -84 to
127.)
DATE Date and time values to the nearest second between January 1, 4712
B.C., and
December 31, 9999 A.D.
NO.6 View the Exhibit and evaluate
the structure and data in the CUST_STATUS table.
You issue the following SQL
statement:
Which statement is true regarding the execution of the above
query?
A. It produces an error because the AMT_SPENT column contains a null
value.
B. It displays a bonus of 1000 for all customers whose AMT_SPENT is
less than CREDIT_LIMIT.
C. It displays a bonus of 1000 for all customers
whose AMT_SPENT equals CREDIT_LIMIT, or
AMT_SPENT is null.
D. It produces
an error because the TO_NUMBER function must be used to convert the result of
the
NULLIF function before it can be used by the NVL2 function.
Answer:
C
Explanation:
The NULLIF Function The NULLIF function tests two terms for
equality. If they are equal the function
returns a null, else it returns the
first of the two terms tested. The NULLIF function takes two
mandatory
parameters of any data type. The syntax is NULLIF(ifunequal, comparison_term),
where
the parameters ifunequal and comparison_term are compared. If they are
identical, then NULL is
returned. If they differ, the ifunequal parameter is
returned.
NO.7 You need to create a table for a banking application. One
of the columns in the table has the
following requirements:
1. You want a
column in the table to store the duration of the credit period.
2) The data
in the column should be stored in a format such that it can be easily added
and
subtracted with date data type without using conversion functions.
3)
The maximum period of the credit provision in the application is 30 days.
4)
The interest has to be calculated for the number of days an individual has taken
a credit for.
Which data type would you use for such a column in the
table?
A. DATE
B. NUMBER
C. TIMESTAMP
D. INTERVAL DAY TO
SECOND
E. INTERVAL YEAR TO MONTH
Answer: D
NO.8 Evaluate the
following SQL statement:
Which statement is true regarding the outcome of the
above query?
A. It executes successfully and displays rows in the descending
order of PROMO_CATEGORY .
B. It produces an error because positional notation
cannot be used in the order by clause with set
operators.
C. It executes
successfully but ignores the order by clause because it is not located at the
end of the
compound statement.
D. It produces an error because the order
by clause should appear only at the end of a compound
query-that is, with the
last select statement.
Answer: D
NO.9 Which normal form is a table in
if it has no multi-valued attributes and no partial
dependencies?
A. First
normal form
B. Second normal form
C. Third normal form
D. Fourth normal
form
Answer: B
NO.10 View the Exhibit and examine the structure of the
product, component, and PDT_COMP
tables.
In product table, PDTNO is the
primary key.
In component table, COMPNO is the primary key.
In PDT_COMP
table, <PDTNO, COMPNO) is the primary key, PDTNO is the foreign key
referencing
PDTNO in product table and COMPNO is the foreign key referencing
the COMPNO in component
table.
You want to generate a report listing the
product names and their corresponding component names,
if the component names
and product names exist.
Evaluate the following query:
SQL>SELECT
pdtno, pdtname, compno, compname
FROM product _____________ pdt_comp
USING
(pdtno) ____________ component USING (compno)
WHERE compname IS NOT
NULL;
Which combination of joins used in the blanks in the above query gives
the correct output?
A. JOIN; JOIN
B. FULL OUTER JOIN; FULL OUTER
JOIN
C. RIGHT OUTER JOIN; LEFT OUTER JOIN
D. LEFT OUTER JOIN; RIGHT OUTER
JOIN
Answer: C