Chapeter 4 : Datawarehouse Flashcards
1
Q
What are the steps of Decision Making.
A
1) Obtaining Data
2) analysing data
3) Developing Alternatives
4) Chosing Alternative
5) Implementing Alternative
2
Q
What is A DataWarehouse ?
A
It is a collection of integrated , subject-oriented , time-variant , non-updateable collection of data.
3
Q
What is Denormalization?
A
The collection of combining all data into a single table
4
Q
What is a dataset?
A
It is a sub-set of a Database or a Datawarehouse such as the table is denormailzed to one single table
