System Design Essay Example for Free

System Design Essay The basis for most systems analysis and design methodologies is the system development life cycle or SDLC. It is sometimes called the waterfall method because the model visually suggests work cascading from step to step like a series of waterfalls. The first step is problem definition. The intent is to identify the problem, determine its cause, and outline a strategy for solving it. Given a clear problem definition, analysis begins. The objective of analysis is to determine exactly what must be done to solve the problem. Typically, the system’s logical elements (its boundaries, processes, and data) are defined during analysis. The objective of design is to determine how the problem will be solved. During design the analyst’s focus shifts from the logical to the physical. Processes are converted to manual procedures or computer programs. Data elements are grouped to form physical data structures, screens, reports, files, and databases. The hardware components that support the programs and the data are defined. The system is created during development. Programs are coded, debugged, documented, and tested. New hardware is selected and ordered. Procedures are written and tested. End-user documentation is prepared. Databases and files are initialized. Users are trained. Once the system is developed, it is tested to ensure that it does what it was designed to do. After the system passes its final test and any remaining problems are corrected, the system is implemented and released to the user. After the system is released, maintenance begins. The objective of maintenance is to keep the system functioning at an acceptable level. a. Prototyping Software prototyping is the creation of prototypes or a rudimentary working model of a product or information system, usually built for demonstration purposes or as part of the development process. In the systems development life cycle (SDLC) Prototyping Model, a basic version of the system is built, tested, and then reworked as necessary until an acceptable prototype is finally achieved from which the complete system or product can now be developed. A prototype typically simulates only a few aspects of the features of the eventual program, and may be completely different from the eventual implementation. The conventional purpose of a prototype is to allow users of the software to evaluate developers proposals for the design of the eventual product by actually trying them out, rather than having to interpret and evaluate the design based on descriptions. Prototyping can also be used by end users to describe and prove requirements that developers have not considered. Prototyping has several benefits: The software designer and implementer can obtain feedback from the users early in the project. The client and the contractor can compare if the software made matches the software specification, according to which the software program is built. It also allows the software engineer some insight into the accuracy of initial project estimates and whether the deadlines and milestones proposed can be successfully met. In this project the Waterfall Systems Approach Method is being used. The systems approach is a problem-solving method that breaks a complex problem into pieces, designs a solution for each piece, and then integrates the solution into a complete system (Dewitz, 1996). As applied to information systems, the systems approach decomposes a system into subsystems and with its environments. In the waterfall model time spent early on making sure that requirements and design are absolutely correct will save much time and effort later. Thus, the thinking of those who follow the waterfall process goes, one should make sure that each phase is 100% complete and absolutely correct before proceeding to the next phase of program creation. Program requirements should be set in stone before design is started otherwise work put into a design based on incorrect requirements is wasted. Also the waterfall model has a simple approach and is more disciplined. The model itself progresses linearly through discrete, easily understandable and explainable phases and thus is easy to understand; it also provides easily mark able milestones in the development process. The systems approach recognizes two major activities: analysis and design. b. System Analysis Systems analysis is the process of studying an existing system – whether manual or automated – and its’ environment. The purposes of analysis are to understand the components and functions of the current system, to identify the organization’s information and processing needs, and to determine the characteristics of a new system to meet these needs (Dewitz, 1996). In the System Analysis phase, Preliminary Investigation, Problem Analysis (studying the existing system), Requirement Analysis (identifying the information needs and what the new system should perform) and Feasibility Study (determining whether the system is feasible for the proposed system) will be performed. System design is the key phase within the system development cycle. It consist of devising specifications for an information system (IS) that best fit a company’s current and expected circumstances (Wilkinson. J. W Cerullo. M. J, 1997). The design may involve an improvement to an existing IS or may pertain to the initial IS for a company. Systems design basically is the reassembling of the components and functions of the IS to satisfy the organization’s information needs most effectively and efficiently. 1. Project Deliverables Following are the Project Deliverables for the Hardware Tracking reporting System. Deliverable Name Deliverable Description DBMS The completed project will produce a DBMS for hardware tracking reporting and replace the current paper based system User training manual A training manual that can be used for training of new staff or the re-training of existing staff in the use of the system Troubleshooting manual A troubleshooting manual that can be used to troubleshoot and possibly resolve any issues that may occur in the daily use of the system Reference manual A reference manual that can be used for quick reference a. Project Milestones Following are the major milestones for the Hardware Tracking reporting System.

Eddie Carbone in A View From the Bridge by Arthur Miller Essay

Eddie Carbone in A View From the Bridge by Arthur Miller The play â€Å"A view from the bridge† is set in Red hook area of New York, the play was written by a man called Arthur Miller he wrote this particular play in 1950 at the age of 35. His parents were immigrants in the United States of America, they had lived a wealthy life this all went wrong along with the American economy. Arthur Miller worked as a warehouse man, and in order to save his fees he went to Michigan University in 1934, to study economics and history. He did a course in playwriting and this became his ambition, he graduated from Michigan University in 1938. Eddie Carbone is the main character in the play, at the start of the play he is a very popular hardworking man then towards the end of the play he becomes a very angry distressed and jealous, and eventually loses his life by getting stabbed by his own knife. Eddie is mainly responsible for his own downfall because he didn’t want Catherine (his niece) to get married to her lover, Rodolfo. Rodolfo and Marco (his brother) are staying with the Carbones as illegal immigrants. Eddie becomes angry because he believes that Rodolfo is taking Catherine away from him this leads him to betray his family by reporting them to the immigration bureau. I think that â€Å"A view from the bridge† is a tragedy because of eddies extreme downfall, he dies because of one mistake. Throughout the play Eddie is jealous of Catherine because she is not his little girl anymore she is turning into a woman. Eddie is an Italian longshore man working on the New York docks. When eddies wife’s cousins, Marco and Rodolfo seek refuge, as i... ...to prevent. I think Eddie is mainly responsible for his own downfall but Catherine could have played some part in causing it because of her getting together with Rodolfo. Eddie never liked Rodolfo from when he first met him he always thought he was weird. Rodolfo also may be responsible for eddies downfall because he never asked eddies permission to get together with her. Marco is Beatrice’s cousin and after Marco and Rodolfo have been in jail they get bailed out and Marco goes after Eddie. Eddie is alone at this stage Marco hits Eddie lunges at Marco with a knife that is meant to kill him. Beatrice tells Eddie to stop but Eddie ignores her like he does throughout the whole play. Then as the knife is in eddies hand it is grabbed by Marco turned and drove into eddies body, within two minutes Eddie carbone is dead.

The panama canal

Since the United States began to feel an upcoming conflict with Spain, we were prepared to go to war. They decided to send the US Oregon from California to Cuba only there was one issue.. The voyage would take over 60 days and 14000 miles to land on Cuba. Not only that but in this process the US Oregon had to stop in South America multiple times to fuel up on coal. At this point the U. S new it was time for a change. They found a way to cut their voyage nearly in half by making a canal that connected the Atlantic to the Pacific.This makes transporting goods, and essential supplies a much quicker process. Incidents leading up to the event†¦ The French were really the masterminds behind this constructions. They started the entire process towards making the canal but in the process, they ran into some issues and went bankrupt. Later on the U. S decided to pick up were the French left off. After getting everything approved in the U. S, Colombia denied us of any right to the property on which the construction was being done. This led up to the Panamanian people rebelling and winning their independence. This now allowed theU. S to finally get a start on completing the canal. What occurred during the construction? The construction finally began in 1904 with over 40,000 workers on the construction site. These workers had to deal with not only Jungle weather but as well as all the dangerous Jungle wildlife there was out there. There was very high temperature, unstable land, and very frequent rain. Sometimes if would rain so often that the river would flood; making construction very difficult. Therefore they built a dam to help with the over flow of water and this defiantly but them back on track with the construction.Despite the numerous accounts for trying to make work conditions safer, over 5,000 workers died due to diseases and accidents on the Job. Results of the Canal†¦ The construction of the canal cost America over $375 million dollars, only now their v oyage was only 40 miles to their destination. They cut the trip by 8,000 miles which is more than half of watt it would have been before. This canal helped the U. S move about much quicker and we had the full support of Latin America. Although in 1914 (official opening) the canal was guarded by the U. S military, it now belongs to the Panamanian but is still used as a trade route for the U. S.

King of Macedonia Alexander - Free Essay Example

Sample details Pages: 3 Words: 889 Downloads: 9 Date added: 2019/04/16 Category History Essay Level High school Tags: Alexander The Great Essay Did you like this example? King of Macedonia Alexander the Great was the king from 336 to 323 B.C. of Macedonia. While in his position of leadership, Alexander the Great had the ability to accomplish many things. One of which was the fact that he was able to reunite Greece. Not only was Alexander III leading the people of Macedonia as their king he also led the Corinthian League. Early Life Alexander III of Macedonia was born on July twentieth of 356 B.C. in the Pella region of Macedonia. His parents were known as King Philip II of Macedon and Queen Olympia, daughter of King Neoptolemus. Alexander the Great and his sister were both raised in the Pella royal court. Alexander rarely saw his father due to his extreme workload and because his father spent most of his time engaged in military campaigns and extra-marital affairs. Because of this Alexander grew to resent his fathers absence and philandering. Don’t waste time! Our writers will create an original "King of Macedonia Alexander" essay for you Create order Alexander had many tutors in his life one his earliest ones was Leonidas, who had been hired by King Phillip to teach him math, horsemanship, and archery. Although Leonidas was a very good tutor he struggled to keep his student under control. Another one of Alexanders tutors was the philosopher Aristotle. He was hired to teach Alexander at the Temple of the Nymphs at Meiza. He would be there for the next three years while Aristotle taught him and a handful of his friends philosophy, poetry, drama, science, and politics. Alexander completed his education at Meiza in 340 B.C. A year later, while still just a teen, he became a soldier and embarked on his first military expedition, against the Thracian tribes. (Biography) Known as Alexander the Great Alexander III of Macedonia was known as Alexander the Great because of many contributing factors. One of which is his successfulness as a Military commander. An example of his success is the fact that he was up against overwhelming odds and he still led his army to victories across the Persian territories of Asia Minor, Syria and Egypt. He did this all without suffering a single defeat. His greatest victory was at the Battle of Gaugamela, in what is now northern Iraq, in 331 BC. (History) The young Alexander, leader of the Greeks, and the pharaoh of Egypt became known as the great king of Persia at the youthful the age of 25. Another factor that causes him to be known as Alexander the Great was that he changed the Ancient world. He did this single-handly in a little more than a decade. Alexander inherited a powerful yet volatile kingdom at just the age of 20. And He quickly dealt with his enemies at home and reasserted Macedonian power within Greece. Alexander the Great founded more than 70 cities in the ancient world. He named more than 20 of them Alexandria after himself. (Godd esses) At such a young age he was doing so much with the little experience he had in politics. Alexander the Great never lost a battle which is the main reason his is called the Great. Accomplishments He became the king of Persia, Babylon, Asia, and created Macedonian colonies in the region. (Biography) Before Alexander was king he took charge of the Companion Cavalry and aided his father, Philip II, in defeating the Athenian and Theban armies at Chaeronea. Alexander and his forces made it in Thebes very swiftly that the city-state did not have an opportunity to get together allies for its defense. Alexander led the massacre of Thebes just three days after his arrival. It was Alexanders hope that the destruction of Thebes would serve as a warning to city-states contemplating revolt. (Biography) His intimidation tactic proved effectual; the other city-states, including Athens, chose to pledge their alliance to the Macedonian Empire or wanted to remain neutral. Persia Alexander commenced on his Asiatic expedition, arriving in Troy that spring in 334. Alexander then faced Persian King Darius IIIs army near the Granicus River; Darius forces were swiftly defeated. By fall, Alexander an d his army had made it across the southern coast of Asia Minor to Gordium, where they took the winter to rest. In the summer of 333, the troops of Alexander and Darius once again went head to head in battle at Issus. (Biography) Although Alexanders army was outnumbered, he used his flair for his military strategy to create formations that defeated the Persians again and caused Darius to flee. After capturing Darius, Alexander declared himself the king of Persia, making him a fugitive in November of 333 B.C. Egypt Next Alexander was planning his campaign to conquer Egypt. After Alexander had besieged Gaza on his way to Egypt, he easily achieved his conquest; Egypt fell without resistance. Designed in 331 as a hub for Greek culture and commerce, he created the city of Alexandria. Alexander defeated the Persians at the Battle of Gaugamela later that year. Alexander became King of Babylon, King of Asia, King of the Four Quarters of the World with the collapse of the Persian army. His Death Alexander the Great was thought to have died of Malaria in Babylon on June 323BC. Although it is unsure of what actually caused his death. He died in the palace of Nebuchadnezzar II when he was 32 years old. Alexander the Greats body was placed in a gold sarcophagus filled with honey, which was then placed in a gold casket.