Database Reference
In-Depth Information
EXERCISES
1. Indicate whether true or false:
A. The DDLC approach enforces a systematic method for database
development.
B. In every database project, the steps of DDLC must be followed strictly in
sequence.
C. The company's business plan indicates future information requirements.
D. The feasibility study phase defines the requirements.
E. JAD is an appropriate methodology for a small company with a few users.
F. The logical design deals with how data are actually stored in the database.
G. The conceptual schema is an aggregation of the external schema.
H. The data dictionary is built after the database system is deployed.
I. Fine-tuning the database is an exclusive responsibility of the database
administrator.
J. Disk space management is an ongoing administrative task.
2. You have been hired as the database administrator for a medical center that
is implementing a new database system from scratch. Consider each phase of
the development life cycle and describe your expected role in each phase.
3. A company manufacturing parts for appliances proposes to move from a
mainframe hierarchical database system to a client/server relational database
system. As the project manager, examine briefly your main challenges in this
major transition.
4. If you are the chief user representative for the database development effort
in a large global organization, what contributions are you expected to make
in the requirements definition phase?
5. You are the senior database designer in the database project for a local bank.
What are your responsibilities in the design phase?
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