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...
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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