Other
DATA C170 PRE-ASSESSMENT: DATA MANAGEMENT - FOUNDATIONS (PFKO)
- Course
- Institution
DATA C170 PRE-ASSESSMENT: DATA MANAGEMENT - FOUNDATIONS (PFKO)
[Show more]
Seller
Follow
Timeless2024
Reviews received
Content preview
2/13/23, 3:50 PM WGU Student PortalWGU KNOWLEDGE CENTER
PRE-ASSESSMENT: DATA MANAGEMENT - FOUNDATIONS
(PFKO)
Attempt #1
Status: Not Passed
1. What is a broad definition of data?
YOUR CORRECT
ANSWER ANSWER
Numbers that are captured on digital media
Raw facts that are captured on printed or digital media
Alphanumeric combinations that can be captured on media that a
computer can read
Any information that can be transferred from print to digital
2. What are data?
YOUR CORRECT
ANSWER ANSWER
Facts that have been organized in a meaningful way
Facts that are the result of a query of a database system
Facts that are collected and stored in a database system
Facts that have been processed and used for decision making
3. What is a determining characteristic of unstructured data?
YOUR CORRECT
ANSWER ANSWER
It does not allow copying and pasting.
It is easy to query and retrieve by business applications.
It does not follow a data model.
It is stored in rows and columns.
4. Refer to this diagram.
https://my.wgu.edu/coaching-report/preassessment-report/v1/studentPidm/10434325/assessmentCode/PFKO/testDate/1676313192 1/20
,2/13/23, 3:50 PM WGU Student Portal
Which item represents unstructured data?
YOUR CORRECT
ANSWER ANSWER
A
B
C
D
5. Which is true about flat files?
YOUR CORRECT
ANSWER ANSWER
They contain no internal hierarchical organization.
They have a limit of 256 records.
They can only contain two-dimensional data.
They are always encrypted.
6. Which technology has no internal hierarchy?
YOUR CORRECT
ANSWER ANSWER
Flat files
Heap files
Hashed tables
Relational databases
https://my.wgu.edu/coaching-report/preassessment-report/v1/studentPidm/10434325/assessmentCode/PFKO/testDate/1676313192 2/20
, 2/13/23, 3:50 PM WGU Student Portal
7. How were data retrieved before database management systems?
YOUR CORRECT
ANSWER ANSWER
Randomly from linked files
Sequentially from simple files
Using set operations on complex files
Using relationships between logical entities
8. What is the uniquely identifiable element about which data can be categorized in an entity-relationship
diagram?
YOUR CORRECT
ANSWER ANSWER
Entity types
Primary keys
Unary relationships
Intersection data points
9. Refer to this diagram.
Which classification is correct for the box marked “Quantity” in the given entity-relationship diagram?
YOUR CORRECT
ANSWER ANSWER
Quantity data
Modality data
https://my.wgu.edu/coaching-report/preassessment-report/v1/studentPidm/10434325/assessmentCode/PFKO/testDate/1676313192 3/20
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 Timeless2024. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $19.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75391 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now