Database Reference
In-Depth Information
PLANNING
Practitioners
Use rs
DBMS
Data-
base
DBA
Inter-
faces
DA
Proce-
dures
Tools
PHYSICAL DESIGN
Figure 14-3
Administrative roles.
DBA begin their effect in later phases of the database development life cycle. Only
in the later stages do you tend to get more and more technical.
Figure 14-3 depicts the administrative roles of the DA and those of the DBA.
Note the phases of the life cycle shown in the periphery of the figure. Also,
observe the major components of a database environment. See how the adminis-
trative roles prove to be useful in the various phases and note how the DA and
DBA play out these significant roles. It is important to observe how the DA and
the DBA must work together in a highly cooperative manner.
Especially note the illustration of the following specific roles in the figure.
Data administrator. Planner, analyst, organizer, coordinator, communicator, liaison
with users, controller.
Database administrator. Designer,
technical expert,
technical advisor,
tester,
security expert, database tuner.
Areas of Responsibility
Let us now look at the DA and DBA from another angle. Consider the major areas
of responsibilities. Who is primarily responsible for specific activities and areas?
How are the two functions meshed together for effective design and development
of the database system?
We list here the areas of responsibilities without tying them to particular phases
of the database development life cycle. In a later section, we will enumerate the
tasks of the DA and DBA in the development phases, one by one. At this point, let
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