1D0-541 Practice Questions

CIW v5 Database Design Specialist

Last Update 1 day ago
Total Questions : 124

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Question # 1

Which security technique limits access by unauthorized users to parts of an enterprise database?

Options:

Views

Concurrency

Locking

Integrity controls

Discussion 0

Question # 2

Which of the following best describes the two-tier database architecture?

Options:

The user accesses a database server using a terminal.

The user interface, data-processing logic, database access and data validation functions are performed on a mainframe server.

The user interface and data validation functions are performed by the client whereas the data-processing logic is performed on a server.

The user interface and data-processing logic are performed by the client whereas the server handles database access and data validation functions.

Discussion 0

Question # 3

Which term describes the management of simultaneous transactions to prevent conflicts?

Options:

Parallelism

Serialization

Database control

Concurrency control

Discussion 0

Question # 4

Using the Customer and Sales_Rep relations shown in the exhibit, you must determine a relational algebraic expression that will result in the following relation: Which of the following relational algebraic expressions would result in this relation? Using the Customer and Sales_Rep relations shown in the exhibit, you must determine a relational algebraic expression that will result in the following relation: Which of the following relational algebraic expressions would result in this relation?

Options:

Customer X Sales_Rep

(Sales_Rep.Sales_Rep_No = Customer.Sales_Rep_No (Sales_Rep X Customer))

(Customer X Sales_Rep) л Sales_Rep.Sales_Rep_No = Customer.Sales_Rep_No

Customer.Sales_Rep_No = Sales.sales_Rep_No (Customer X Sales_Rep)

Discussion 0

Question # 5

Which component in the three-tier database architecture handles the data-processing and business logic?

Options:

Thin client

Fat client

Database server

Application server

Discussion 0

Question # 6

Which concurrency control method should be used only when conflicts between transactions rarely occur?

Options:

Locking

Time stamps

Optimistic

Serialization

Discussion 0

Question # 7

Consider the Recreation relation shown in the exhibit. You need to apply a SQL statement to the

Recreation relation that will return the following data:

Which SQL statement applied to the Recreation relation will return this data?

Options:

SELECT Activity FROM Recreation;

SELECT DISTINCT Activity FROM Recreation;

SELECT Activity FROM Recreation

WHERE NOT LIKE Activity;

SELECT Activity FROM Recreation

WHERE DISTINCT Activity;

Discussion 0

Question # 8

Consider the Recreation relation in the exhibit. A data operation that changes one of the tuples for Student_ID 1003 must be performed. It is necessary to change one of the activities from swimming to tennis. The Student_ID and Activity attributes make up the primary key for the Recreation relation. All related information must be altered, as well. Which SQL statement or statements would best accomplish this?

Options:

UPDATE Recreation SET Activity,

Activity_Fee (‘Tennis’,100) WHERE

Student_ID = 1003;

UPDATE TABLE Recreation ALTER COLUMN ACTIVITY

SET ACTIVITY =‘Tennis', Activity_Fee = 100 WHERE

Student__ID = 1003 AND Activity = wimming?AND Activity=

?wimming?

UPDATE Recreation SET Activity =

‘Tennis', Activity_Fee = 100 WHERE

Student_ID = 1003 AND Activity =

'Swimming';

DELETE Activity FROM

Recreation WHERE

Student_ID = 1003; INSERT

INTO Recreation VALUES (1003,‘Tennis', 100);

Discussion 0

Question # 9

Consider the Dept1_Parts and Dept2_Parts relations shown in the exhibit. Which of the following SQL statements would create an intersection of the two relations with the widest variety of Structured Query Language dialects?

Options:

SELECT *

FROM Dept1_Parts

AND

(SELECT *

FROM Dept2_Parts);

SELECT *

FROM Dept1_Parts

INTERSECTION

(SELECT *

FROM Dept2_Parts);

SELECT *

FROM Dept1_Parts

WHERE Dept1_Parts.Part_ID = Dept2_Parts.Part_ID;

SELECT *

FROM Dept1_Parts

WHERE Dept1_Parts.Part_ID = Dept2_Parts.Part_ID;

Discussion 0

Question # 10

The exhibit shows a relation for a company projects. Which candidate key(s) would best serve as the primary key for this relation?

Options:

S_Date and E_Date

ProjJD

ltem_Num and E_Date

Proj_ID and Item_Num

Discussion 0

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