CIW 1D0-541 Exam Dumps - Updated Apr 2024

Question 1

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

AParallelism

BSerialization

CDatabase control

DConcurrency control

Question 2

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?

AUPDATE Recreation
SET Activity, Activity_Fee ('Tennis', 100)
WHERE Student_ID = 1003;

BUPDATE TABLE Recreation
SET ACTIVITY = 'Tennis', Activity_Fee = 100
WHERE Student_ID = 1003
AND Activity = Swimming;

CUPDATE Recreation
SET Activity = 'Tennis', Activity_Fee = 100
WHERE Student_ID = 1003
AND Activity = 'Swimming';

DDELETE Activity
FROM Recreation
WHERE Student_ID = 1003;
INSERT INTO Recreation
VALUES (1003, 'Tennis', 100);

Question 3

Which pair of relational algebraic operations requires union compatibility?

AProjection and Cartesian product

BSelection and projection

CIntersection and difference

DCartesian product and intersection

Question 4

Consider the entity-relation (ER) diagram shown in the exhibit. When the logical database

design phase is completed, which of the following is a valid DBDL description of the base

relations for the ER diagram?

ASTUDENT(
Student_Number: integer NOT NULL
Name: variable length character string length 20 NOT NULL)
Primary Key Student_Number
CLASS(
Class_Num: integer NOT NULL
Class_Name: integer NOT NULL)
Primary Key Class_Num

BSTUDENT(
Student_Number: integer NOT NULL
Name: variable length character string length 20 NOT NULL)
Primary Key Student_Number
CLASS(
Class_Num: integer NOT NULL
Class_Name: integer NOT NULL)
Primary Key Class_Num
Foreign Key Class_Num References STUDENT

CSTUDENT(
Student_Number: integer NOT NULL
Name: variable length character string length 20 NOT NULL)
Primary Key Student_Number
STU_CLASS(
Student_Number: integer NOT NULL
Class_Num: integer NOT NULL)
Primary Key Student_Number
CLASS(
Class_Num: integer NOT NULL
Class_Name: integer NOT NULL)
Primary Key Class_Num

DSTUDENT(
Student_Number: integer NOT NULL
Name: variable length character string length 20 NOT NULL)
Primary Key Student_Number
STU_CLASS(
Student_Number: integer NOT NULL
Class_Num: integer NOT NULL)
Primary Key Student_Number
CLASS(
Class_Num: integer NOT NULL
Class_Name: integer NOT NULL)
Primary Key Class_Num

Question 5

Which of the following definitions applies to all types of databases?

AData that is stored as tables

BSoftware that manipulates data

CData that is stored in a structured manner

DData records that are stored sequentially in a file

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