WGU Course C170 - Data Management (Applications)
with complete solution guide
A salesperson is authorized to sell many products and a product can be sold by many salespersons.
Which kind of binary relationship does this scenario describe?
A One-to-one
B One-to-many
C One-to-one binary
D Many-to-many Correct Answer- D
Which kind of relationship is displayed in this entity-relationship diagram?
A Many-to-many unary
B Many-to-many binary
C One-to-one unary
D One-to-one binary Correct Answer- A
Which kind of relationship is displayed in this entity-relationship diagram?
A Binary many-to-many
B Unary one-to-one
C Ternary many-to-many
D Ternary one-to-one
D Unary many-to-many
E Binary one-to-one Correct Answer- B
How is this portion of the entity-relationship diagram read, from left to right?
,A At least one book was written by an author.
B Only one book was written by one author.
C No books are written by an author.
D One book was written by more than one author. Correct Answer- A
Which two examples are attributes?
Choose 2 answers
1 A meeting code
2 A person attending a meeting
3 An employee number
4 A sales meeting
A 1,3
B 2,4 Correct Answer- A
Which delete rule sets column values in a child table to a missing value when the matching data is
deleted from the parent table?
A Restrict
B Cascade
C Matching
D Set-to-Null Correct Answer- D
In this entity-relationship diagram, Salesperson 361 is related to two customers. The table follows the
restrict delete rule.
,What happens if someone tries to delete Salesperson 361 from the customer records?
A The delete occurs immediately.
B The lack of a salesperson is flagged for later.
C A new salesperson is assigned instead.
D The delete is prohibited. Correct Answer- D
Refer to the given SQL statement.
CREATE TABLE member(member_idINT UNSIGNED NOT NULL AUTO_INCREMENT,PRIMARY KEY
(member_id),last_nameVARCHAR(20) NOT NULL,first_nameVARCHAR(20) NOT NULL,suffixVARCHAR(5)
NULL,expirationDATE NULL,emailVARCHAR(100) NULL,streetVARCHAR(50) NULL,cityVARCHAR(50)
NULL,stateVARCHAR(2) NULL,zipVARCHAR(10) NULL,phoneVARCHAR(20) NULL,interestsVARCHAR(255)
NULL);
Which two columns are created as something other than variable-length strings in this statement?
Choose 2 answers
1 member_id
2 expiration
3 suffix
4 email
5 last name
6 city
A 1,2
B 3,4 Correct Answer- A
, This database table has ten different employee numbers in the first column. Employee_ID is the primary
key. In addition, it has ten different names in the second column and two office addresses repeated five
times each in the third column.
Which action should be used to translate this data into third normal form?
A Move the data from the third column into the first column.
B Move the data from the third column into its own table.
C Move the data from the first two columns into separate tables.
D Move the data from the second column into the third column. Correct Answer- B
A database manager starts to convert data that has been normalized into a form that conforms to the
relational model. A simple primary key has been established and all the repeating groups have been
deleted.
In which form is this data?
A First normal form
B Second normal form
C Third normal form
D Fourth normal form Correct Answer- B
Two attributes in two related tables have the exact same domain of values. The attribute is a primary
key in one table.
Which kind of key is the attribute in the other table?
A Compound
B Composite
C Primary
with complete solution guide
A salesperson is authorized to sell many products and a product can be sold by many salespersons.
Which kind of binary relationship does this scenario describe?
A One-to-one
B One-to-many
C One-to-one binary
D Many-to-many Correct Answer- D
Which kind of relationship is displayed in this entity-relationship diagram?
A Many-to-many unary
B Many-to-many binary
C One-to-one unary
D One-to-one binary Correct Answer- A
Which kind of relationship is displayed in this entity-relationship diagram?
A Binary many-to-many
B Unary one-to-one
C Ternary many-to-many
D Ternary one-to-one
D Unary many-to-many
E Binary one-to-one Correct Answer- B
How is this portion of the entity-relationship diagram read, from left to right?
,A At least one book was written by an author.
B Only one book was written by one author.
C No books are written by an author.
D One book was written by more than one author. Correct Answer- A
Which two examples are attributes?
Choose 2 answers
1 A meeting code
2 A person attending a meeting
3 An employee number
4 A sales meeting
A 1,3
B 2,4 Correct Answer- A
Which delete rule sets column values in a child table to a missing value when the matching data is
deleted from the parent table?
A Restrict
B Cascade
C Matching
D Set-to-Null Correct Answer- D
In this entity-relationship diagram, Salesperson 361 is related to two customers. The table follows the
restrict delete rule.
,What happens if someone tries to delete Salesperson 361 from the customer records?
A The delete occurs immediately.
B The lack of a salesperson is flagged for later.
C A new salesperson is assigned instead.
D The delete is prohibited. Correct Answer- D
Refer to the given SQL statement.
CREATE TABLE member(member_idINT UNSIGNED NOT NULL AUTO_INCREMENT,PRIMARY KEY
(member_id),last_nameVARCHAR(20) NOT NULL,first_nameVARCHAR(20) NOT NULL,suffixVARCHAR(5)
NULL,expirationDATE NULL,emailVARCHAR(100) NULL,streetVARCHAR(50) NULL,cityVARCHAR(50)
NULL,stateVARCHAR(2) NULL,zipVARCHAR(10) NULL,phoneVARCHAR(20) NULL,interestsVARCHAR(255)
NULL);
Which two columns are created as something other than variable-length strings in this statement?
Choose 2 answers
1 member_id
2 expiration
3 suffix
4 email
5 last name
6 city
A 1,2
B 3,4 Correct Answer- A
, This database table has ten different employee numbers in the first column. Employee_ID is the primary
key. In addition, it has ten different names in the second column and two office addresses repeated five
times each in the third column.
Which action should be used to translate this data into third normal form?
A Move the data from the third column into the first column.
B Move the data from the third column into its own table.
C Move the data from the first two columns into separate tables.
D Move the data from the second column into the third column. Correct Answer- B
A database manager starts to convert data that has been normalized into a form that conforms to the
relational model. A simple primary key has been established and all the repeating groups have been
deleted.
In which form is this data?
A First normal form
B Second normal form
C Third normal form
D Fourth normal form Correct Answer- B
Two attributes in two related tables have the exact same domain of values. The attribute is a primary
key in one table.
Which kind of key is the attribute in the other table?
A Compound
B Composite
C Primary
