Other IT & Programming Subjects
P
PHP
926 questions
M
Magento
372 questions
U
Unity3d
184 questions
W
Wordpress
647 questions
V
Visual Basic
137 questions
W
Web Programming
23 questions
T
TCP/IP
150 questions
S
Software Quality Assurance
140 questions
S
Software Engineering
159 questions
S
Swift
332 questions
S
Signal & Systems
16 questions
S
SalesForce
204 questions
R
R Programming
140 questions
S
SAP
111 questions
P
PostgreSQL
236 questions
A
Android
0 questions
D
Data Mining
113 questions
I
Information Technology
132 questions
I
Information Systems & technology
203 questions
G
GO Programming
36 questions
F
Firewall
159 questions
D
DSA
253 questions
D
Django
198 questions
V
VPN
84 questions
H
HTML
674 questions
R
Rest API
63 questions
N
Networking
400 questions
O
Operating Systems
216 questions
P
Programming Language
155 questions
N
Netbeans
37 questions
S
Software Analytics
394 questions
P
Python
835 questions
O
Oracle
104 questions
D
DOS
109 questions
A
Apache HTTP Server
49 questions
F
Frontend Web Development
59 questions
W
Web Building
0 questions
W
Web Development
16 questions
Data Ware Housing
0
Answered
0
Correct
0%
Accuracy
Question 1
Easy
Mcq
✓ Correct
✗ Incorrect
What is true of querying normalized data in a relational database for the purposes of business analysis?
Explanation:
Aggregating relevant data requires multiple table joins when data is normalized. 3NF splits data across many tables requiring joins to reconstruct complete information. Challenges: complex SQL, slower performance, query complexity. This motivates dimensional modeling for analytics. Data doesn't require ETL to warehouse first (though recommended for performance). New primary keys not needed for aggregation. Multiple joins are inherent to normalized structures. This is why data warehouses use denormalized star schemas - fewer joins, faster queries, better for analysis.
Filter by Difficulty
Difficulty Filter
Sign in to unlock
Sign in to unlock
Other Subjects
Other IT & Programming Subjects
P
PHP
8193 questions
M
Magento
8193 questions
U
Unity3d
8193 questions
W
Wordpress
8193 questions
V
Visual Basic
8193 questions
W
Web Programming
8193 questions
T
TCP/IP
8193 questions
S
Software Quality Assurance
8193 questions
S
Software Engineering
8193 questions
S
Swift
8193 questions
S
Signal & Systems
8193 questions
S
SalesForce
8193 questions
R
R Programming
8193 questions
S
SAP
8193 questions
P
PostgreSQL
8193 questions
A
Android
8193 questions
D
Data Mining
8193 questions
I
Information Technology
8193 questions
I
Information Systems & technology
8193 questions
G
GO Programming
8193 questions
F
Firewall
8193 questions
D
DSA
8193 questions
D
Django
8193 questions
V
VPN
8193 questions
H
HTML
8193 questions
R
Rest API
8193 questions
N
Networking
8193 questions
O
Operating Systems
8193 questions
P
Programming Language
8193 questions
N
Netbeans
8193 questions
S
Software Analytics
8193 questions
P
Python
8193 questions
O
Oracle
8193 questions
D
DOS
8193 questions
A
Apache HTTP Server
8193 questions
F
Frontend Web Development
8193 questions
W
Web Building
8193 questions
W
Web Development
8193 questions