Question 1

Consider the following database information:

domain s_id: integer domain grd: fixed length

character string length 1

STUDENT_GRADE(

Student_Number: s_id NOT NULL -

Grade: grd ) Primary Key -

Student_Number -

During which phase of the database design process would this information be developed?

Options :

A : Logical

B : Physical

C : Conceptual

D : Implementation

Answer: A

Question 2

Consider the Information Engineering diagram in the exhibit showing a conceptual data model of the relations BUILDING and RESIDENT. What is the next step in refining the data model?

Options :

A : Create intermediate entities

B : Create a logical data model.

C : Resolve many-to-many relationships

D : Identify and resolve complex relationships.

Answer: B

Question 3

Which of the following best describes a composite key?

Options :

A : A composite key is a primary key that consists of the first two attributes of a relation

B : A composite key is a primary or foreign key defined by its parent keys.

C : A composite key is a foreign key that consists of the same attributes as the primary key from a related table.

D : A composite key is a primary or foreign key that consists of two or more attributes of a relation

Answer: D

Question 4

Consider the relation shown in the exhibit. Which of the following SQL statements would return a relation that excludes all customers with a Satisfaction_Rate of less than or equal to 80 unless the Sales_Office is located in Atlanta?

Options :

A : SELECT * FROM Customers WHERE Satisfaction_Rate > 80 OR Sales_Office = Atlanta

B : SELECT * FROM Customers WHERE Satisfaction_Rate <= 80 AND Sales_Office = Atlanta

C : SELECT * FROM Customers WHERE Satisfaction_Rate >= 80;

D : SELECT * FROM Customers WHERE Satisfaction_Rate >= 80 AND NOT Sales Office = Atlanta

Answer: A

Question 5

Consider the entity-relationship (ER) diagram shown in the exhibit. Which type of relationship between the two entities is shown?

Options :

A : m:m

B : m:n

C : 1:1

D : 1:n

Answer: B

Higher Test Marks with Free Online 1D0-541 Exam Practice

Buying Options: