System analysis and design case study
Discuss what method should be used for system changeover. The system development process is a set of activities, methods, best practices, deliverables, and automated tools that stakeholders use in the development and maintenance of information systems and software. While these processes vary from one organization to another depending on the needs of these organizations, there are common characteristics that can be found. Willowbrook School is an institution seeking to develop a new information system for their company.
The Willowbrook School seeks to develop a new information system in order to handle the requirements of the institution as well as the students and staff. The system should allow students and staff to access the information resources of the institution as well as allow the management of information and data. In light of these requirements, a client server architecture favors this form of systems in a significant manner. Though a file-server architecture would also work for the particular case, it will limit the flexibility and the scalability of the system.
Furthermore, it is important to note that there are many data transmission and storage required due to the expected use of the system by both the students as well as the staff members. In a client-server system, most of the processing and data access control processing is performed by the server Zhang, The clients send requests to the server to access specified information from the server.
The server then processes the request and either grants access to or denies access to the file based on the set configurations. In a client-server architecture, the files are stored in a central location which makes the administration of management operations easy for the information technology specialists.
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Secondly, the network peripherals are controlled from a central location. This centralization of both resources as well as data makes the administration and administration operations easy to control.
Based on the discussion and explanation provided by Oluwatosin , the following diagram demonstrates a client-server system architecture. The clients can only access the data and the network resources through the server. The server acts as an interface between the client applications and the main data storage. Based on the requirements of the network system, I would recommend the application and implementation of a hybrid topology. Hybrid topology is implementation and combination of more than one network topology.
For instance, the bus topology is easy to implement and scale but has a major bottleneck because heavy network traffic can significantly slow down the entire network system. The star topology offers good performance and is easy to scale but is totally dependent on the central hub, a single point of failure. The combination of these different network topologies results in more powerful and superior network topology that combines the advantages of each of the network topology.
A hybrid network topology is reliable, scalable, flexible and highly effective and does not introduce the single point of failure that is inherent in other network topologies. As explained in the introduction, the information system of Willowbrook School will follow the client-server approach and the hybrid topologies for the subnetworks.
Another main consideration that needs to be taken care of during the design is the issue of network security. As such, network security is essential in every network system. As such, the following are the hardware requirements of the proposed network system:. Two routers: The router connects the organizational network system to the internet.
The use of a single router introduces the single point of failure in the network system and this using two routers to connect to the internet will eliminate the single point of failure challenge. Three firewall systems: As explained above, security of the network system is essential. It does this by filtering content into or out of the organizational network based on the content of the traffic.
These firewalls will be used in the implementation of a dual-firewall demilitarized zone for the security of the network system. Switches: Based on the total number of client devices required in each department, switches that effectively connect all the devices on the department. Each department will be considered as a subnetwork and thus will need at least one switch. Access point: Being an institution, most of the students attend classes with handheld devices such as tablets, laptops and smart phones.
The Access point will be used to connect these devices through a wireless connection. To connect devices in the offices, CAT5E network cables will be used.
Systems Analysis & Design
Servers: As explained above, servers services the requests from the clients. Some of the main servers required in the network include a database server, email servers, HTTP servers and others as may be required by the institution. Client computers: These are the computer systems that are used by the staff and students at the company. Computers with a minimum configurations of 1.
Fiber optic cable: To ensure high performance of the network system, a fiber optic cable will be used as the backbone of the network system, connecting the various departments and buildings. The network is to be designed following the client-server architecture with each department forming a subnetwork of the entire network system. The main software system that will be used in the development is packet tracer software.
A SYSTEM ANALYSIS, DESIGN, AND DEVELOPMENT CASE STUDY: UDESIGN CUSTOM T-SHIRTS ORDER ENTRY SYSTEM
Packet tracer will be used during the design and implementation of the network system. SQL system will also be used for the implementation of the database system of the institution. Though a software system for the administration of the network system can be developed from the beginning, this will not be cost-efficient. Today, the market has many cheap off-the-shelf software systems for the management of network.
The most appropriate for this network system is the PRTG Network Management Software that offers services for monitoring the bandwidth, the availability of the different resources, performance and load monitoring Paessler AG, The interface will be developed by NetBeans Java software development platform. An SQL database will be developed to store data for the institution.
However, depending on the needs of each department, different database systems will be developed for each department. Varying in the level of detail, topics addressed, and source organization, these case studies are used to enhance learning at workshops, training, retreats, and conferences. The use of case studies is viewed as important by NASA since "organizational learning takes place when knowledge is shared in usable ways among organizational members.
Sample Case Studies For Systems analysis and design methods
Knowledge is most usable when it is contextual" NASA Case study teaching is a method for sharing contextual knowledge to enable reapplication of lessons learned. Friedman, G. Updated June Accessed September Why Case Studies? Systems Engineering 7 1 : Gorod, A. White, V.
Willowbrook School System Analysis And Design Case Solution
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