Chapter 3 Flashcards
1
Q
Can there be multiple operational systems in dataware house
A
Yes
2
Q
What is data extraction
A
Getting data from operational systems
3
Q
What is the process of dataware house
A
Get data from internal and external sources. Transform it into uniform format. Access it
4
Q
What is header of table
A
Table structure
5
Q
What are the differences between dataware house and management information system
A
- Different patterns of hardware utilization
- Dataware house combines operational and historical data
- Updates are in batch and periodic rather than real-time
6
Q
Which factors determine how much history should be maintain for a particular business
A
- Industry
- Cost
7
Q
What is the period time for telecom industry for data storage
A
18 months
8
Q
What is the equation for data storage
A
Economic value of data vs storage cost (economic value should be higher)
