Chapter 37 Flashcards
1
Q
What does that mean when we say data is horizontally wide
A
There are many columns
2
Q
What does that mean when we say data is vertically wide
A
tens of thousands of rows
3
Q
What is ETL_A
A
Agriculture Economic Threshold Level
4
Q
What are the 3 phases in building DWH
A
- Planning and Design
- Building and Testing
- Roll-Out and Maintenance
5
Q
What is dimensional modeling
A
Dimensional modeling is a technique used to model databases for analytical applications.
6
Q
What schema is simplified in nature in DSS world
A
star schema
