Systems Analysis is a detailed study of the current system
that leads to specifications of a new system. The Systems
Analysis for the e-shop in a can will use an object-oriented
approach to enable us to model our entities on real world
objects and to help us understand and document their
characteristics.
OOA will allow maintainability through simplified mapping to
the real world, which provides for less analysis effort, less
complexity in system design, and easier verification by the
user; reusability of the analysis artefacts which saves time
and costs; and depending on the analysis method and
programming language, productivity gains through direct
mapping to features of Object-Oriented Programming Languages.
Object-oriented vs. Process-oriented analysis
Process-oriented analysis describes systems as a network of
interacting processes. It includes descriptions of data used
by processes, which are recorded in a data dictionary. This
approach often steers the analyst away from studying system
components and their interrelationships towards studying how
the system might be designed and implemented. It is also
difficult for process-oriented analysis to map concepts
between a network of processes and objects existing in a
real-world system.
As opposed to process-oriented analysis, object-oriented
analysis modularizes an analysis document along the same
object boundaries that exist in a real-world system. In
addition, this approach also organizes all knowledge about
each system object in a single logical location in the
analysis document. Thus, information about a system object is
easier to locate in object-oriented analysis than in other
analysis methods. The object-oriented approach also
encourages analysts to concentrate on "what" rather than
"how", which reduces the temptation to skip prematurely to
design. To make it easier to understand information about
objects, object-oriented techniques provide forms of
abstraction including aggregation, generalization and
classification.
Interviews, on-site observation and questionnaire are just
some the tools that will be also used for system
analysis.
This will make it easier to draw the exact boundary of the
e-shop in a can and enable us to:
- Keeping in view the problems and new requirements
- Workout the pros and cons including new areas of the
system
- During systems analysis we will look at new approaches
for designing ecommerce web sites, with an expanded
coverage of the graphical user interface (GUI) design with
careful attention being made for easy onscreen navigation.
The systems analysis will allow us to look at ways of
implementing website security and privacy safeguards
including firewalls, corporate polices, SSL, etc.
- Eventually the systems analysis will lead to a risk
assessment which will allow us to identify potential risks
of the system and enhance resource allocation
decisions.
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