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?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Academia199. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
