® 12 questions were answered correctly.
5 questions were answered incorrectly.
Te
In each milestone, you may want or need to use the database
and query tool to answer some of the questions. We suggest you
open the tool in another browser tab while you are working on
this assessment.
https://postgres.sophia.org/
What is wrong with the following ERD meant to show a
relationship between two entities?
Employee § Dept
There is nothing wrong with the
O ERD.
Both of the objects are attributes.
There is no relationship between
O the entities.
, One of the items is set up as an
o (o] attribute.
RATIONALE
Rectangles are used to indicate the entities. Attributes have ovals
to distinguish them. To show a relationship between entities and
attributes, a line is drawn between them.
CONCEPT
— Tables as Entities
Report an issue with this question
2 @
Review the sample movie ratings ERD after 3NF.
, User ZipCode
| PK Userld
UserFirstName
UserLastName
Phone
Email MovieGenre
Address Movield
UserName Genreld
Password
Genre
Zip
$x Genreld
GenreName
ex Ratingld
| CE RoleType
$c Movield
K
RoleTypeld
NumericRating RoleTypeName
TextualRating
ReviewDate
Movield
RoleTypeld po——
Personld po—
18 Movield
RoleName
MovieTitle
ReleaseDate
| 8 Personld
Length
PersonFirstName
Description
PersonLastName
AverageRating
What is the relationship between tables Movie and Genre?
M:N
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 VEVA2K. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.99. You're not tied to anything after your purchase.
