Free bca final year projects On Mobile Banking Part 4
FRONT END - ASP.NET, C#
BACK END - SQL SEVER 2007
FRONT END - ASP.NET, C#
BACK END - SQL SEVER 2007
PROJECT 3# ONLINE AUCTION SYSTEM
FRONTEND - C # AND .NET FRAMEWORK
BACKEND - SQL SERVER 2008
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6.0. Free bca final year projects On Mobile Banking SOFTWARE DESIGN
6.1 Design Overview
The design
phase begins with the free bca final year projects requirements specification
for the software to be developed. Design is the first step to moving from the
free bca final year projects problem domain towards the solution domain. Design
is essentially the bridge between requirement specification and the final
solution for satisfying the free bca final year projects requirements. It is
the most critical factor affecting the quality of the software.
The design process for software system
has two levels.
1.
System Design or Top level design
2.
Detailed Design or Logical Design
System Design:
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Detailed Design:
In detailed design the
interconnection of the free bca final year projects modules or how the
specifications of the modules can be satisfied is decided. Some properties for
a software system design are
·
Verifiability
·
Completeness
·
Consistency
·
Traceability
·
Simplicity / Understandability
Software Architecture:
The free bca
final year projects application which we are developing is Two Tier architecture.
Here we have 3 Tiers user interface, BAL and DAL.
In our project
user interface is a J2ME part where we can see the output screens in the
emulator.
Business access
layer is the action class in J2ME. In this class we will open the connection to
the tomcat server for sending the values & get them as parameters in the
servlet.
Data access
layer is the servlet class in the free bca final year projects tomcat server for
connecting to the database for inserting and retrieving the data from the
database.
Here in three
Tiers the request and response will be a Bi-directional.
When a request
is generated from the J2ME emulator the request will be sent to the action
class through servlet and connects to the database. In the same way response
will be generated by sending the free bca final year projects requested data
from the database to the servlet via action class to the emulator.
Here the DAL and
database may change but the user interface and BAL doesn’t change.
The entire
system is a system is a thread based process. A thread is generated when a
request is generated from the free bca final year projects mobile to the action
class to open the StreamConnection to the servlet for each and every request.
Application Architecture:
Application architecture
is nothing but the project flow. In the users block the free bca final year
projects users are the customers of the bank. They can access all the banking
transactions which are mentioned provided they should have a bank account and
should be registered for the free bca final year projects application.
Customers are provided with user id & password by the bank authorities.
The customers
will access all the banking transactions which are mentioned in the Action
class such as change password, mini statement, balance enquiry, view bills,
cheque request cheque status, and Fund transfer. In the free bca final year
projects action class block we have the user interface design and also the request
to open the connection for the server.
In servlet block
we have the free bca final year projects corresponding pages for the action
class to connect to the database for inserting and getting the details.
6.2 UML Design
INTRODUCTION
TO UML:
The Unified
Modeling Language (UML) is a standard language for specifying,
visualizing, constructing, and documenting the free bca final year projects
artifacts of software systems, as well as for business modeling and other non-software
systems. The UML represents a collection of best engineering practices that
have proven successful in the modeling of large and complex systems. The UML is
a very important part of developing objects oriented software and the free bca
final year projects software development process. The UML uses mostly
graphical notations to express the design of software projects. Using the
UML helps project teams communicate, explore potential designs, and validate the
free bca final year projects architectural design of the software.
Goals of UML
The primary goals in the design of the UML were:
·
Provide users with a ready-to-use, expressive
visual modeling language so they can
develop and exchange meaningful models.
·
Provide extensibility and specialization
mechanisms to extend the core concepts.
·
Be independent of particular programming
languages and development processes.
·
Provide a formal basis for understanding the
free bca final year projects modeling language.
·
Encourage the growth of the OO tools market.
·
Support higher-level development concepts such
as collaborations, frameworks, patterns and components.
·
Integrate best practices.
Why we use UML?
As the
strategic value of software increases for many companies, the industry looks
for techniques to automate the free bca final year projects production of
software and to improve quality and reduce cost and time-to-market. These
techniques include component technology, visual programming, patterns and
frameworks. Businesses also seek techniques to manage the complexity of systems
as they increase in scope and scale. In particular, they recognize the need to
solve recurring architectural problems, such as physical distribution,
concurrency, replication, security, load balancing and fault tolerance. Additionally,
the free bca final year projects development for the World Wide Web, while
making some things simpler, has exacerbated these architectural problems. The
Unified Modeling Language (UML) was designed to respond to these needs.
UML
Diagrams
The underlying premise of UML is
that no one diagram can capture the free bca final year projects different
elements of a system in its entirety. Hence, UML is made up of nine diagrams
that can be used to model a system at different points of time in the software
life cycle of a system.
The nine UML diagrams are:
·
Use case diagram:
The use case diagram is used to identify the
free bca final year projects primary elements and processes that form the
system. The primary elements are termed as "actors" and the free bca
final year projects processes are called "use cases." The use case
diagram shows which actors interact with each use case.
·
Class diagram:
The class diagram is used to refine the free
bca final year projects use case diagram and define a detailed design of the
system. The class diagram classifies the free bca final year projects actors
defined in the use case diagram into a set of interrelated classes. The
relationship or association between the classes can be either an
"is-a" or "has-a" relationship. Each class in the class
diagram may be capable of providing certain functionalities. These
functionalities provided by the free bca final year projects class are termed
"methods" of the class. Apart from this, each class may have certain
"attributes" that uniquely identify the class.
·
Object diagram:
The object diagram is a special kind of
class diagram. An object is an instance of a class. This essentially means that
an object represents the state of a class at a given point of time while the
free bca final year projects system is running. The object diagram captures the
state of different classes in the system and their relationships or
associations at a given point of time.
·
State diagram:
A state diagram, as the name suggests,
represents the free bca final year projects different states that objects in
the system undergo during their life cycle. Objects in the system change states
in response to events. In addition to this, a state diagram also captures the
transition of the object's state from an initial state to a final state in
response to events affecting the system.
·
Activity diagram:
The free bca final year projects process
flows in the system are captured in the activity diagram. Similar to a state
diagram, an activity diagram also consists of activities, actions, transitions,
initial and final states, and guard conditions.
·
Sequence diagram:
A sequence diagram represents the
interaction between different objects in the system. The free bca final year
projects important aspect of a sequence diagram is that it is time-ordered.
This means that the exact sequence of the interactions between the free bca
final year projects objects is represented step by step. Different objects in
the sequence diagram interact with each other by passing "messages".
·
Collaboration diagram:
A collaboration diagram groups together the
interactions between different objects. The interactions are listed as numbered
interactions that help to trace the free bca final year projects sequence of
the interactions. The collaboration diagram helps to identify all the free bca
final year projects possible interactions that each object has with other
objects.
·
Component diagram:
The component diagram represents the free
bca final year projects high-level parts that make up the system. This diagram
depicts, at a high level, what components form part of the system and how they
are interrelated. A component diagram depicts the components culled after the
free bca final year projects system has undergone the development or
construction phase.
·
Deployment diagram:
The deployment diagram captures the
configuration of the runtime elements of the application. This diagram is by
far most useful when a system is built and ready to be deployed.
Now that we have an idea of the
free bca final year projects different UML diagrams, let us see if we can
somehow group together these diagrams to enable us to further understand how to
use them.
UML
Diagram Classification—Static, Dynamic, and Implementation
A software system can be said to
have two distinct characteristics: a structural, "static" part and a
behavioral, "dynamic" part. In addition to these two characteristics,
an additional characteristic that a software system possesses is related to
implementation. Before we categorize UML diagrams into each of these three
characteristics, let us take a quick look at exactly what these characteristics
are.
· Static:
The static characteristic of a system is
essentially the structural aspect of the system. The free bca final year
projects static characteristics define what parts the system is made up of.
· Dynamic:
The behavioral features of a system; for
example, the ways a system behaves in response to certain events or actions are
the free bca final year projects dynamic characteristics of a system.
· Implementation:
The implementation characteristic of a
system is an entirely new feature that describes the different elements
required for deploying a system.
The UML diagrams that fall under each of these categories are:
·
Static
·
Use case diagram
·
Class diagram
·
Dynamic
o Object
diagram
o State
diagram
o Activity
diagram
o Sequence
diagram
o Collaboration
diagram
·
Implementation
o Component
diagram
o Deployment
diagram
Finally, let us take a look at the free bca final
year projects 4+1 view of UML diagrams.
Views
of UML Diagrams
Considering that the UML diagrams can be used in
different stages in the life cycle of a system, let us take a look at the
"4+1 view" of UML diagrams. The 4+1 view offers a different
perspective to classify and apply UML diagrams. The 4+1 view is essentially how
a system can be viewed from a software life cycle perspective. Each of these
views represents how a system can be modeled. This will enable us to understand
where exactly the free bca final year projects UML diagrams fit in and their
applicability.
The different views are:
- Design
View:
The design view of a system is the
structural view of the system. This gives an idea of what a given system is
made up of. Class diagrams and object diagrams form the design view of the free
bca final year projects system.
·
Process View:
The dynamic behavior of a system can be seen
using the process view. The different diagrams such as the state
diagram, activity diagram, sequence diagram, and collaboration diagram are used
in this view.
·
Component View:
Component view shows the free bca
final year projects grouped modules of a given system modeled using the
component diagram.
- Deployment
View:
The deployment diagram of UML is used to
identify the deployment modules for a given system.
- Use case
View:
Finally, we have the free bca final year
projects use case view. Use case diagrams of UML are used to view a
system from this perspective as a set of discrete activities or transactions.
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