Database Reference
In-Depth Information
Chapter 4
DATABASE DEVELOPMENT LIFE CYCLE
CHAPTER OBJECTIVES
•
Understand the need for a careful and systematic approach to database
development
•
Examine the steps and tasks in the database development life cycle (DDLC)
•
Learn why proper planning is absolutely essential for database development
•
Study how requirements are defined and how the design phase is completed
•
Observe and appreciate the tasks necessary to complete the implementation
and for ongoing maintenance of the database system
At this point, you greatly appreciate the pivotal role of the database system in an
organization. The success of modern organizations rests on the effectiveness of their
database systems. The database system in an organization provides information crit-
ical for achieving the goals of the organization, for fulfilling its core business, and
for driving the primary processes. The importance of the organization's database
system cannot be overstated.
If the database system of an organization is of paramount importance, then its
design and development must be substantially significant as well. If so, how should
an organization go about establishing its database system? Obviously, with a lot of
care and attention. We will discuss the activities and tasks required to create a sound
database system for an organization. We will begin with an overview of the required
steps; next, we will walk through each of the steps in sufficient detail. When we have
completed the discussion, you will have gained a broader understanding of the
design and development process.
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