CIW 1D0-541 Exam Questions

Question 6 of 124

Consider the Dept1_Parts and Dept2_Parts relations shown in the exhibit. Which of the following SQL statements would create a set difference of the two relations with the widest variety of Structured Query Language dialects?
Exam 1D0-541: Question 6 - Image 1

SELECT * FROM Dept1_Parts EXCEPT(SELECT PartJD FROM Dept2_Parts);

SELECT * FROM Dept1_Parts MINUS (SELECT Part_ID FROM Dept2_Parts);

SELECT * FROM Dept1_Parts DIFFERENCE (SELECT Part_ID FROM Dept2_Parts);

SELECT * FROM Dept1_Parts WHERE Part_ID NOT IN (SELECT Part_ID FROM Dept2_Parts);

Correct Answer: D

The SQL statement that would create a set difference of the two relations with the widest variety of Structured Query Language dialects is: SELECT * FROM Dept1_Parts WHERE Part_ID NOT IN (SELECT Part_ID FROM Dept2_Parts). This statement uses the NOT IN clause, which is widely supported across different SQL dialects, to filter out rows from Dept1_Parts where the Part_ID exists in Dept2_Parts.

Question 7 of 124

Consider the Information Engineering diagram shown in the exhibit. Building_ID, R_ID, Room_Count and Room_Num are integer numbers, whereas Bldg_Name,
Location and Res_Name are all represented by variable-length strings with a maximum of 20 characters.
Which SQL statement best implements the RESIDENT relation shown in this diagram?
Exam 1D0-541: Question 7 - Image 1

CREATE TABLE RESIDENT ( R_ID INTEGER NULL PRIMARY KEY, Room_Num FLOAT, Res_Name VARCHAR, Building_ID INTEGER NULL, FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID));

CREATE TABLE RESIDENT ( R_ID INTEGER NOT NULL PRIMARY KEY, Room_Num BINARY, Res_Name VARCHAR (20), Building_ID INTEGER NOT NULL, FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID));

CREATE TABLE RESIDENT ( R_ID INTEGER NOT NULL PRIMARY KEY, Room_Num INTEGER, Res_Name VARCHAR (20), Building_ID INTEGER NOT NULL);

CREATE TABLE RESIDENT ( R_ID INTEGER NOT NULL PRIMARY KEY, Room_Num INTEGER, Res_Name VARCHAR (20), Building_ID INTEGER NOT NULL, FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID));

Correct Answer: D

The correct SQL statement should ensure that 'R_ID' is not null and is set as the primary key, 'Room_Num' is an integer, 'Res_Name' is a variable-length string with a maximum of 20 characters, and 'Building_ID' is not null with a foreign key constraint referencing 'Building_ID' in the BUILDING table. Option D meets all these requirements.

Question 8 of 124

Which term describes one or more database operations that are executed as a single unit?

Update

Transaction

Encapsulation

Operational group

Correct Answer: B

A transaction describes one or more database operations that are executed as a single unit. Transactions ensure that either all operations within the unit are completed successfully or none are, maintaining the integrity of the database.

Question 9 of 124

Your enterprise is involved in planning a database project. The exhibit shows the result of one phase of the database design life cycle. Which term best describes the diagram shown in the exhibit?
Exam 1D0-541: Question 9 - Image 1

Information Engineering (IE) data model

Corporate data model

Database requirements model

ERD model

Correct Answer: B

Question 10 of 124

Consider the following relations shown in the exhibit. Which of the following SQL statements would return the Customers2 relation from the Customers relation?
Exam 1D0-541: Question 10 - Image 1

SELECT * FROM Customers WHERE Satisfaction_Rate <= 80 OR Satisfaction_Rate >= 90;

SELECT * FROM Customers WHERE Satisfaction_Rate IN (80 AND 90);

SELECT *FROM Customers WHERE Satisfaction_Rate >= 80 AND Satisfaction_Rate <= 89;

SELECT * FROM Customers WHERE Satisfaction_Rate BETWEEN (80, 90);

Correct Answer: C

The correct SQL statement to return the Customers2 relation from the Customers relation is: SELECT * FROM Customers WHERE Satisfaction_Rate >= 80 AND Satisfaction_Rate <= 89. The Customers2 relation includes records where the Satisfaction_Rate is between 80 and 89 inclusive (85 and 81 in this case). The options that involve satisfaction rates of exactly 80 or 90, or using the BETWEEN syntax without proper boundaries, are incorrect.