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PROJECT
You will complete a project that will assess your understanding and comprehension of systems development. The minimum written requirement is five pages and may extend beyond the five pages due to the size of the drawings.
Scenario:
The Cycle Stationary Unit (CSU) is a company that sells stationary cycles to fitness centers, rehabilitation centers, and home consumers. CSU is a multi-million-dollar business that employs 1,000 employees for the building, selling, packaging, and shipping of their products to consumers. You are a systems analyst, and management has tasked you to create a new point of sale (POS) system for CSU.
You must complete the following requirements for this final project:
1. Describe briefly the five steps of the systems development life cycle.
2. Differentiate between agile, JAD, and RAD methodologies. Which will you use for the development, and why? Would you use a prototype method?
3. Summarize the six steps of the preliminary investigation and the project triangle.
4. Explain what a data flow diagram (DFD) is. Illustrate by drawing a DFD of a context diagram point of sale (POS) system using the Gane and Sarson symbols and a diagram 0 DFD.
5. Discuss what object-oriented development is, and draw an object model of the point of sale system. Remember you must have an object model, attributes, and methods in the object model. Also, draw a use case modeling UML (Unified Modeling Language) for the POS.
6. Describe the seven basic principles for developing user interface design. Draw a simple entity relationship diagram (ERD) for the POS.
7. Summarize the last step of the SDLC of systems support and security. Why is this so important to the Cycle Stationary Unit (CSU) organization?
8. Explain what global, national, or local industry needs could affect the POS system.
NOTE: All requirements must be completed in the order shown. Format your assignment using APA style. Windows and Mac owners: All you need is a simple drawing program such as Paintbrush. Mac owners can download the software from the Mac App Store.
2
System
development life cycle has six stages of creating a system.
3
Each step is
important as it plays a significant role in a project.
The dev
elopment cycle involves
the developing and implementing systems in order to retire the information systems
from initiating, analyzing, designing the systems to the implementation and
maintenance phases. The process is best used when creating or updating a
database
system and is most useful when undertaking a large project.
·
Planning
–
Stage where you outline the problem, the main objectives, and all
resources which will be required for use.
4
After that, you choose if you will create a
new system, make some upgrades to the existing system or just leave the current
system as it is.
·
System Analysis
–
Determination of the client’s needs. The client is tangled as they
clarify how they need the development to be carried out and in what way it will
ensemble their needs.
4
Thus, documents the necessities and gets a sign
–
off from
both the customer and administration to go forward with the system.
· System Design
–
It is the architectural phase.
The members derive the logical plan
and construc
tion of flow of information for the system. Concrete coding is not yet
underway at this period.
· System Implementation
–
We begin the actual coding of the system begin.
Developing and installing of the system begins here. Maintenance, as well as any
other
future updates of the system, are carried out in this phase.
4
· System testi
ng and Integration
–
After coding is comprehensive, the system goes
over a severe test to see if it has any excuses and that it is steady.
Once it concludes
the assessments, the consumer can now use it.
· System maintenance
–
If a consumer has any inquiry or
apprehensions about the
system, they can get sustenance from the designers who remain to maintain the
system. Operations such as backups and recovery can be performed in this stage as
well as issuing of permissions by the system’s administrator.
Methodolo
gies Software methodology is an outline used to assemble, strategize and
regulate the development of a system.
4
Agile, RAD and JAD are software
procedures, though, vary from each other.
3 Agile methodology is used for taking on software engineering schemes.
They try to decrease peril by developing software in repetitions that can take up to 4 weeks. After 4 weeks have gone off each repetition, the members re-evaluate plan significances. It inspires teamwork.
There are several variances between JAD and RAD procedures. While both JAD and RAD employ teams that are contain users, managers, and Information Technology staff, they have quite a few points of dissimilarity. For example, JAD stresses on team-based information-gathering missions, that are only one phase of the growth process. RAD, however, is more of a trampled form of the whole process (Topi & Tucker, 2014). JAD is a prototypical that combines together commercial areas and IT professionals in a highly engrossed workshop. The prime reason for the usage of JAD is to advance the value of the final development by inserting emphasis on the straightforward portions of the progress life cycle. This lessens the likelihood of errors. RAD, however, is a system development process that aids functioning systems to be established within a limited time period as slight as few months. This emanates with some concessions. This is for the reason that developments are planned with static timelines, in which detriments are completed on the functionalities if need be.
As of all the three procedures, I would select RAD methodology as it bargains faster implementation as equated to the other approaches. It also lessens the volume of creation needed to complete a development.
4 Yes, I would use models as it gives a user a sensation of how the concrete system will function and offer their views and commendations hence they feel like they are part of the system development.
5
Six Steps of the Preliminary Investigation and the Project Triangle.
They include:
· Step 1:
3 Understand the problem- Identify the current system and analyze the problem statement.
· Step 2:
3 Define Project Scope and constraints- Identify which part of the scheme is to be included and what is left out.
· Step 3:
4 Determine Feasibility- Get to know which feasibility study will be carried out.
· Step 4:
3 Analyse time and project cost-Estimate the time that the project will take to be complete and cost involved.
· Step 5:
4 Present results and recommendations to Management- This should be in the form of a word document called a Preliminary Investigation Report which gives a detailed report of the system.
5 Data flow Diagram The data flow diagram categorizes where the data originates from, heads to, and by which transport system it travels.
The data flow illustration technique that is frequently utilized to develop a source system is also frequently used during the base system analysis.
The data flow illustration generally comprises the tags and the descriptions of the physical settings that are presented by the information profile.
5 Apart from the tags and descriptions, the diagram also adds the proportions of time, categorizations, and movements to the base system analysis.
Object-Oriented Development Object-oriented development is a system design concept that assumes the view that what people really care about are the objects that they desire to manipulate as opposed to the logic needed to manipulate them.
Some of the examples of objects can take the form of human beings and buildings and floors.
Humans can be described with the use of names and address.
3 A simple POS system should include a CPU, screen, keyboard, barcode readers, receipt copier, payment dispensation system and the POS terminal software.
To checkout, a customer needs to participate in the checkout.
The customer can only check out once, but the mode of payment can take part in several ways for checkouts like cash, credit card or debit e.t.c.
Basic Principles of User-centered Design · The principle of user profiling- Get to know who your user is.This helps in understanding their preferences so that the system will suit them.
· The principle of metaphor- Borrow behaviors from systems that are similar to yours.
Complex systems can be understood more from picking a system that almost looks similar to the one you want.
4 · The principle of feature exposure- This lets us see clearly what functions are available · The principle of coherence- The program behavior should be both internally and externally consistent.
· The principle of state visualization- Changes in expression should be reflected in the system · The principle of shortcuts- This should be able to provide both concrete and abstract ways of getting a job done.
· The principle of grammar- know what language will be used for the user interface.
The last Stage of SDLC Systems Support and Security This stage involves the incorporation of the current security control procedures.
5 Examples of those controls that can be executed through incorporation consist of access controls, authentication, encryption, and firewalls.
Other procedures are using antivirus programs, physical controls, administrative controls, and technical controls.
This stage is significant for it guarantees that essential control measures are well-known in order to avoid unlicensed intrusion with an establishment’s information systems by uninvited parties. In totaling, it ensures that consumers and handlers’ vital and private data is protected.
5 Local Industry Needs that Could affect POS System There are several local business needs that can affect the POS system.
For example, businesses may want to track catalog and accept payments. Also, organizations may want to track procuring movements and market sales.
5 These clusters of aspects play an important role in manipulating the development of a POS system for they are established by certifying that such requirements are encompassed in the development of the POS system.
With the present knowledge in the POS, rivalry amongst creators in the world play an important role as each corporation is looking for the top POS which is dissolute and effective to keep their clients happy.
5
2
System development life cycle has six stages of creating a system.
3
Each step is
important as it plays a significant role in a project.
The dev
elopment cycle involves
the developing and implementing systems in order to retire the information systems
from initiating, analyzing, designing the systems to the implementation and
maintenance phases. The process is best used when creating or updating a
database
system and is most useful when undertaking a large project.
· Planning
–
Stage where you outline the problem, the main objectives, and all
resources which will be required for use.
4
After that, you choose if you will create a
new system, make some upgrades to the existing system or just leave the current
system as it is.
·
System Analysis
–
Determination of the client’s needs. The client is tangled as they
clarify how they need the development to be carried out and in what way it will
ensemble their needs.
4
Thus, documents the necessities and gets a sign
–
off from
both the customer and administration to go forward with the system.
· System Design
–
It is the architectural phase.
The members derive the logical plan
and construc
tion of flow of information for the system. Concrete coding is not yet
underway at this period.
· System Implementation
–
We begin the actual coding of the system begin.
Developing and installing of the system begins here. Maintenance, as well as any
other
future updates of the system, are carried out in this phase.
4
· System testi
ng and Integration
–
After coding is comprehensive, the system goes
over a severe test to see if it has any excuses and that it is steady.
Once it concludes
the assessments, the consumer can now use it.
· System maintenance
–
If a consumer has any inquiry or
apprehensions about the
system, they can get sustenance from the designers who remain to maintain the
system. Operations such as backups and recovery can be performed in this stage as
well as issuing of permissions by the system’s administrator.
Methodolo
gies Software methodology is an outline used to assemble, strategize and
regulate the development of a system.
4
Agile, RAD and JAD are software
procedures, though, vary from each other.
2 System development life cycle has six stages of creating a system. 3 Each step is
important as it plays a significant role in a project. The development cycle involves
the developing and implementing systems in order to retire the information systems
from initiating, analyzing, designing the systems to the implementation and
maintenance phases. The process is best used when creating or updating a database
system and is most useful when undertaking a large project.
· Planning- Stage where you outline the problem, the main objectives, and all
resources which will be required for use. 4 After that, you choose if you will create a
new system, make some upgrades to the existing system or just leave the current
system as it is.
· System Analysis- Determination of the client’s needs. The client is tangled as they
clarify how they need the development to be carried out and in what way it will
ensemble their needs. 4 Thus, documents the necessities and gets a sign-off from
both the customer and administration to go forward with the system.
· System Design- It is the architectural phase. The members derive the logical plan
and construction of flow of information for the system. Concrete coding is not yet
underway at this period.
· System Implementation- We begin the actual coding of the system begin.
Developing and installing of the system begins here. Maintenance, as well as any
other future updates of the system, are carried out in this phase.
4 · System testing and Integration- After coding is comprehensive, the system goes
over a severe test to see if it has any excuses and that it is steady. Once it concludes
the assessments, the consumer can now use it.
· System maintenance- If a consumer has any inquiry or apprehensions about the
system, they can get sustenance from the designers who remain to maintain the
system. Operations such as backups and recovery can be performed in this stage as
well as issuing of permissions by the system’s administrator.
Methodologies Software methodology is an outline used to assemble, strategize and
regulate the development of a system. 4 Agile, RAD and JAD are software
procedures, though, vary from each other.
