100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
COP 4710 Final Exam Question and answers correctly solved 2024 $13.49   Add to cart
Quickly navigate to
Preview
  2.  
  3. COP
  4.  
  5. COP

Exam (elaborations)

COP 4710 Final Exam Question and answers correctly solved 2024

 7 views  0 purchase
  • Course
  • COP
  • Institution
  • COP

COP 4710 Final Exam Question and answers correctly solved 2024 COP 4710 Final Exam A table is in Second Normal Form if it - correct answer no partial key dependencies. Second and Third Normal Forms are both concerned with an attribute that is - correct answer a non-key determinant. In 2N...

[Show more]

Preview 2 out of 10  pages

Document information

  • September 7, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

Written for

  • COP
  • COP

Seller

avatar-seller
flyhigher329

Reviews received

Content preview

COP 4710 Final Exam
A table is in Second Normal Form if it - correct answer ✔no partial key
dependencies.


Second and Third Normal Forms are both concerned with an attribute that is -
correct answer ✔a non-key determinant. In 2NF, the non-key determinant is
a component of the table's composite key, and in 3NF the non-key
determinant is outside of the table's key.


When we achieve this normal form, there are no non-key functional
dependencies in a table. That means that all attributes in the table describe
the key, and don't belong to some other object. - correct answer ✔1NF
eliminates non-atomic and repeating attributes in a table. 2NF and 3NF
describe a determinant that doesn't belong to the key.


If employeeID is the key of a table, then it's a - correct answer ✔determinant.


The only functional dependencies in a table should - correct answer ✔be key
dependencies.


A deletion anomaly is - correct answer ✔is the side effect of placing data
about more than one object in the same table. When a row is deleted, data
about both objects is eliminated.


Generally, unnormalized tables are normalized by - correct answer
✔Dividing the table into two, one for each object ("decomposition"), eliminates
redundancy, solves modification anomalies, and brings the table to a higher
normal form.

, What is "Data Redundancy" in a table? - correct answer ✔Redundancy is the
repetition of the same fact more than once in a table. Multiple rows repeat the
same fact over and over.


Unnormalized tables are undesirable because they - correct answer ✔t. An
unnormalized table is undesirable because it has these negative
characteristics:


Unnormalized tables have data redundancies.
Data redundancies cause modification anomalies.
Modification anomalies make the data unreliable and hard to maintain.
the other answers (more tables, more joins, and slower performance) are
drawbacks of normalized tables. The benefits of normalization usually
outweigh the drawbacks.


First Normal Form means - correct answer ✔First Normal Form means that
attributes in a table must be:


Atomic, meaning that a single attribute cannot contain a list, array, or other
structure that must be searched or processed to determine its contents.
Non-repeating, meaning that an attribute cannot be duplicated multiple times
in a row to produce a list within a single row.


The method for normalizing a table is: - correct answer ✔involves
decomposing a table into two new tables.


If a table has a pair of columns that provide the same information but uses
different terms (such as "date-of-birth" and "age"), then the columns risk
getting out of agreement with each other.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 flyhigher329. 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.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

71498 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$13.49
  • (0)
  Add to cart