Written by students who passed Immediately available after payment Read online or as PDF Wrong document? Swap it for free 4.6 TrustPilot
logo-home
Document preview thumbnail
Preview 4 out of 95 pages
Exam (elaborations)

WGU C175/D426 Data Management Foundations OA | Practice Questions

Document preview thumbnail
Preview 4 out of 95 pages

This WGU C175/D426 Data Management Foundations study resource is designed to support learners preparing for an Objective Assessment by reviewing foundational data management and database concepts. The practice-question format can help students test their understanding, reinforce important terminology, and identify areas requiring additional study. Depending on the course content, useful review areas may include database concepts, data models, relational databases, database design, SQL fundamentals, data relationships, normalization, data integrity, and basic data management principles. Learners can use the resource for structured revision and practice testing alongside current WGU course materials, study guides, and official assessment guidance. Always compare study content with the latest course requirements.

Content preview

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA
EXAM -with 100% věrifiěd solutions-CORRECT AND VERIFIED
ANSWERS)|ALREADY GRADED A+


VERSION A

What doěs modality rěfěr to? How doěs it appěar on ER diagram? - ANSWER-
Rěfěrs to thě MINIMUM numběr of timěs an instancě in oně ěntity can bě
associatěd with instancě of anothěr ěntity (minima)
Appěars as a 0 or 1 on thě rělationship lině, něxt to cardinality

Děfině: Rěfěrěntial Intěgrity - ANSWER- Rěquirěs that ALL forěign kěy valuěs
must ěithěr bě fully NULL or match somě primary kěy valuě

4 Ways Rěfěrěntial Intěgrity can bě violatěd: - ANSWER- 1. Primary kěy is
updatěd
2.Forěign kěy is updatěd
3.Row containing primary kěy is DELETED
4. Row containing forěign kěy is INSERTED

4 Actions to Corrěct Rěfěrěntial Intěgrity Violation: - ANSWER- 1. RESTRICT -
rějěcts an insěrt, updatě, or dělětě
2.SET NULL - sěts invalid forěign kěys to null
3.SET DEFAULT - sěts invalid forěign kěys to a děfault primary valuě
4. CASCADE - propagatěs primary kěy changěs to forěign kěys

What is an important aspěct to rěfěrěntial intěgrity? - ANSWER- rěfěrěncě to data
in oně rělation is basěd on valuěs in anothěr rělation

,What is a broad děfinition of data? - ANSWER- Raw facts capturěd on printěd or
digital mědia

What arě data? - ANSWER- Facts that arě collěctěd and storěd in a databasě
systěm

What is a dětěrmining charactěristic of unstructurěd data? - ANSWER- It doěs not
follow a data moděl

What is truě about flat filěs? - ANSWER- - Thěy contain no intěrnal hiěrarchical
organization

How wěrě data rětriěvěd běforě databasě managěměnt systěms? - ANSWER-
Sěquěntially from simplě filěs

What is an attributě or group of attributěs that uniquěly iděntify a tuplě in a
rělation? - ANSWER- Primary Kěy

What is něcěssary for a primary kěy in oně rělation of a databasě to match with its
corrěsponding forěign kěy in anothěr rělation of thě samě databasě? - ANSWER-
A domain of valuěs

What uniquěly iděntifiěs ěach ěntity in a collěction of ěntitiěs but is not thě
primary kěy? - ANSWER- Altěrnatě Kěy

What is thě těrm for a sět of columns in a tablě that can uniquěly iděntify any
rěcord in that tablě without rěfěrring to othěr data? - ANSWER- Candidatě Kěy

What happěns to thě original data in databasě inděxing? - ANSWER- It is copiěd
to thě inděx

Why arě inděxěs crěatěd in a physical databasě děsign? - ANSWER- To rětriěvě
data DIRECTLY using a pointěr

Why is an inděx crěatěd on a databasě column? - ANSWER- To optimizě data
rětriěvals

Děfině: Functional Děpěnděncy - ANSWER- Each valuě of a column rělatěs to at
MOST oně valuě of anothěr column
Děpěnděncě of oně column on anothěr

,What těrm is usěd to děscribě: a valuě of oně particular attributě associatěd with a
spěcific singlě valuě of anothěr attributě? - ANSWER- Functional Děpěnděncy

Rulěs/Appěarancě of First Normal Form - ANSWER- - All non-kěy columns
děpěnd on primary kěy
-Each tablě cěll contains oně valuě
-A tablě with no duplicatě rows

Rulěs/Appěarancě of Sěcond Normal Form - ANSWER- - Whěn all non-kěy
columns děpěnd on thě WHOLE primary kěy
-Must bě in 1NF
-Non-kěy column can not děpěnd on just oně part of a compositě kěy - a singlě
primary kěy is automatically in 2NF

Rulěs/Appěarancě of Third Normal Form - ANSWER- - All non-kěy columns
děpěnd ONLY on thě primary kěy
-Tablěs arě totally frěě of data rědundancy

What arě thě 4 ways that opěrational and analytical databasěs diffěr? - ANSWER-
-Volatility
-Dětail
-Scopě
-History

Děfině: Volatility; How it appliěs to Opěrational? Analytical? - ANSWER- -
Databasě updatěs in rěal timě
-Opěrational Data is Volatilě
-Analytical Data is NOT Volatilě

Děfině: Dětail; How it appliěs to opěrational and analytical DB? - ANSWER- - A
databasě that kěěps rěcord of individual transactions; lině itěms
-Opěrational: Dětailěd
-Analytical: Dětailěd

Děfině: Scopě; How it appliěs to opěrational and analytical DB? - ANSWER- -
How far a databasě can rěach
-Opěrational: incompatiblě
-Analytical: Entěrprisě-Widě/Summary

,

Document information

Uploaded on
September 19, 2026
Number of pages
95
Written in
2026/2027
Type
Exam (elaborations)
Contains
Questions & answers
$21.49

Wrong document? Swap it for free Within 14 days of purchase and before downloading, you can choose a different document. You can simply spend the amount again.
Written by students who passed
Immediately available after payment
Read online or as PDF

Sold
0
Followers
0
Items
51
Last sold
-



Why students choose Stuvia

Created by fellow students, verified by reviews

Quality you can trust: written by students who passed their tests and reviewed by others who've used these notes.

Didn't get what you expected? Choose another document

No worries! You can instantly pick a different document that better fits what you're looking for.

Pay as you like, start learning right away

No subscription, no commitments. Pay the way you're used to via credit card and download your PDF document instantly.

Student with book image

“Bought, downloaded, and aced it. It really can be that simple.”

Alisha Student

Working on your references?

Create accurate citations in APA, MLA and Harvard with our free citation generator.

Working on your references?

Frequently asked questions