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Exam (elaborations)

PRE1 Questions with complete solution 2024

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  • Course
  • WGU D427
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  • WGU D427

PRE1 Questions with complete solution 2024 Data Management - Applications - D427 Create a data type with a positive value UNSIGNED Designating a foreign key in CREATE TABLE statement FOREIGN KEY (ColumnName) REFERENCES Tablename(ColumnName), Command to add a column to an existing t...

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  • September 1, 2024
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  • 2024/2025
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  • pre1
  • WGU D427
  • WGU D427
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PRE-ASSESSMENT: DATA
MANAGEMENT - APPLICATIONS
D
Which kind of relationship is displayed in this entity-relationship diagram?
One-to-one binary
One-to-one unary
Many-to-many binary
Many-to-many unary




1.
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?
One-to-one
One-to-many
Many-to-many
One-to-one binary
C




A
Which kind of relationship is displayed in this entity-relationship diagram?


Unary one-to-one

,Unary many-to-many


Binary one-to-one


Binary many-to-many


Ternary one-to-one


Ternary many-to-many




B
How is this portion of the entity-relationship diagram read, from left to right?
No books are written by an author.
At least one book was written by an author.
One book was written by more than one author.
Only one book was written by one author.




Which two examples are attributes? Choose 2 answers


A person attending a meeting


An employee number

, A sales meeting


A meeting code


B, D




Which delete rule sets column values in a child table to a missing value when
the matching data is deleted from the parent table?


Restrict


Cascade


Matching


Set-to-Null


D




A
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?

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