WGU C175 or D426 DATA MANAGEMENT FOUNDATIONS OA EXAM ACTUAL EXAM WITH 300 QUESTIONS AND ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+
1 view 0 purchase
Course
WGU C175 or D426 DATA MANAGEMENT FOUNDATIONS OA
Institution
WGU C175 Or D426 DATA MANAGEMENT FOUNDATIONS OA
WGU C175 or D426 DATA MANAGEMENT
FOUNDATIONS OA EXAM ACTUAL EXAM
WITH 300 QUESTIONS AND ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+
How does Cardinality appear on the ER Diagram - ANSWER-Appears as a
1 or M on the relationship line, closest to entity
Refers to the MAXIMUM number of time...
How does Cardinality appear on the ER Diagram - ANSWER-Appears as a
1 or M on the relationship line, closest to entity
Refers to the MAXIMUM number of times an instance in one entity can be
associated with instance of another entity - ANSWER-One-To-Many
Database models were developed to _____? - ANSWER-model real-world
events or conditions
The entity integrity rule requires - ANSWER-All primary keys must be
unique
,2|Page
A table is perceived as a ______. - ANSWER-2 dimensional structure
A table can be logically connected to another table by defining a _____. -
ANSWER-common attribute
We can describe a link by observing that ____. - ANSWER-A primary key
of one table appears again as a foreign key in a related table
An attribute (or group of attributes) that uniquely identifies each entity in a
table is called - ANSWER-Superkey
A foreign key must: - ANSWER-Match a primary key in a related table.
,3|Page
The ERD is used to graphically represent the ____ database model. -
ANSWER-Conceptual
A derived attribute _____. - ANSWER-Need not be physically stored within
the database.
A _____ attribute is one that cannot be subdivided. - ANSWER-Atomic
If an entity can exist apart from one or more related entities, it is said to be:
- ANSWER-Existence-Independent
Dependencies based on only a part of a composite key are called: -
ANSWER-Partial-Dependencies
A special operator used to check for similar character strings is: -
ANSWER-LIKE
, 4|Page
UPDATE tablename ***** WHERE conditionlist What command replaces
the *****? - ANSWER-expression = columnname
What does a record consist of? - ANSWER-A set of one or more fields
What function does A DBMS perform that guarantee the integrity and
consistency of the data in the database? - ANSWER-Data integrity, data
storage, and security management
What is data? - ANSWER-Raw Facts
Database models were developed to what? - ANSWER-Model real-world
events or conditions
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 edwinnyamoita. 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.
