2023-2024 WGU C175/D426 Data Management Foundations OA Exam with Answers (531 Solved Questions)

2023-2024 WGU C175/D426 Data Management Foundations OA Exam with Answers lets you practice with real past exam questions to boost your confidence.

Olivia Parker
Contributor
4.2
65
7 months ago
Preview (29 of 94)
Sign in to access the full document!
WGU C175/D426 DATA MANAGEMENT FOUNDATIONS
OA EXAM 2023-2024 ACTUAL EXAM 2 LATEST
VERSIONS 300 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (100% CORRECT AND
VERIFIED ANSWERS)|ALREADY GRADED A+
WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA
EXAM 2023-2024 ACTUAL EXAM 2 LATEST VERSIONS 300
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (100% CORRECT AND VERIFIED
ANSWERS)|ALREADY GRADED A+
VERSION A
What does modality refer to? How does it appear on ER diagram? - ANSWER-
Refers to the MINIMUM number of times an instance in one entity can be
associated with instance of another entity (minima)
Appears as a 0 or 1 on the relationship line, next to cardinality
Define: Referential Integrity - ANSWER- Requires that ALL foreign key values
must either be fully NULL or match some primary key value
4 Ways Referential Integrity can be violated: - ANSWER- 1. Primary key is
updated
2. Foreign key is updated
3. Row containing primary key is DELETED
4. Row containing foreign key is INSERTED
4 Actions to Correct Referential Integrity Violation: - ANSWER- 1. RESTRICT -
rejects an insert, update, or delete
2. SET NULL - sets invalid foreign keys to null
3. SET DEFAULT - sets invalid foreign keys to a default primary value
4. CASCADE - propagates primary key changes to foreign keys
What is an important aspect to referential integrity? - ANSWER- reference to data
in one relation is based on values in another relation

Loading page 6...

Loading page 7...

Loading page 8...

Loading page 9...

Loading page 10...

Loading page 11...

Loading page 12...

Loading page 13...

Loading page 14...

Loading page 15...

Loading page 16...

Loading page 17...

Loading page 18...

Loading page 19...

Loading page 20...

Loading page 21...

Loading page 22...

Loading page 23...

Loading page 24...

Loading page 25...

Loading page 26...

Loading page 27...

Loading page 28...

Loading page 29...

26 more pages available. Scroll down to load them.

Preview Mode

Sign in to access the full document!

100%

Study Now!

XY-Copilot AI
Unlimited Access
Secure Payment
Instant Access
24/7 Support
Document Chat

Document Details

Related Documents

View all