Author Question: Briefly describe Bradley's three-level database model. What will be an ideal ... (Read 82 times)

Brittanyd9008 · **on:** Jul 7, 2018

Briefly describe Bradley's three-level database model.

What will be an ideal response?

Question 2

In a three-tiered architecture, middleware is housed in:

A)

Tier 0.
B)

Tier 1.
C)

Tier 2.
D)

Tier 3.

dajones82 · **Reply #1 on:** Jul 7, 2018

Answer to Question 1

1. Level 1 is the external, conceptual, or local level. This level is not concerned with how the data is physically stored or what data is used by other applications.
2. Level 2 is the logical or enterprise data level. It encompasses all of the organization's relevant data under the control of the data administrators.
3. Level 3 is the physical or storage level. It specifies the way the data is physically stored.

Answer to Question 2

C