Geog 495: GIS Database Design
10/5/05
Discuss questions with your group member, and present the conclusions drawn from the group discussion.
1.
What
is data independence, and why is it important?
2.
Discuss
the differences between transaction databases and data warehouse databases.
3.
What
is the difference between an object and a class in the object oriented data
model (OODM)?
4.
Describe
the basic features of the relational data model, and discuss their importance
to the end user and the designer.
5.
Why
is an object said to have greater semantic content than an entity?
6.
Discuss
four data models discussed in terms of logical/physical data independence.