Database assignment Example | Topics and Well Written Essays - 2500 words

Database - Assignment Example This whole function has brought a breakthrough in the fields of re-engineering, modeling and construction. Considering a data model, it is a flowchart or diagram that brings out the specific relationships present within data values. Effective data management requires that relationships between data be accurately determined and represented. It is therefore a process that should not be ignored. Data models which are efficiently designed allow for identification of errors and misconceptions that might be present in a data range. Data modeling has been given different approaches due to its importance. According to Burbank, these approaches include the following: Physical data modeling This type of modeling makes use of the current facilities and specific constraints of a particular database management system. It provides database specific kind of representation of a data model. Conceptual data modeling This kind of data modeling makes use of concepts and their specific relationships appl icable to databases. It explains the nature of a database using a series of assumptions and semantics. Logical data modeling This is a type of data modeling whereby specific data representations of a given company are explained using relationships and entities. Moreover, it is not dependent of any specific technology of data management. Enterprise data modeling In this modeling, graphical models are used to represent data in a company. This implies that outputs like XML Schemas (XSD) and Entity Relationship Diagrams (ERDs) are used to provide data model outputs. (Burbank, 2011) In an attempt to make data modeling more efficient and realistic, several data modeling software have been developed over the past few years. For instance, CA Erwin Data Modeler and Oracle Data Modeler are some of the modeling software that are now widely used all over the world. These two programs have made data modeling more efficient, faster and cheaper than using the conventional methods. This paper will provide deeper insight on both Erwin and Oracle data modeler tools. The two programs will also be compared and their key features and functionalities outlined. Overview of CA Erwin Data Modeler Erwin data modeler is a data modeling tool used to perform the same function by several companies and organizations. There are also several other companies that uses the same data modeler throughout the globe. This program was initially developed by a renowned software developer known as Logic Works. Platinum Technology later purchased it in 1998. In 1999, Computer Associates purchased Platinum and is the same company that directly markets it. As a modern data modeling software, Erwin support a wide variety of database design functions that encompasses the following: Data modeling Forward engineering (This involves the process of creating a specific physical database and database schema model while relying on the grounds of data model) Reverse engineering(Where data models are created in rega rds to a pre-existing model of data) These functions are applicable in Erwin for various relational database hierarchical structures that cover a wide variety of used databases (Burbank, 2011). Erwin can be used to perform data modeling for different types of databases like information systems, database transactional systems, data marts and several others. Erwin support various displays of diagrams drawn or structured from different perspectives. For instance, it allows for viewing and manipulation of

African studies Essay Example | Topics and Well Written Essays - 500 words - 5

African studies - Essay Example Additionally, the trade also led to the adoption of Islam religion. The encounter of West Africans with the Arabs helped Northern Africa to become a part of the Islamic influence. The Trans-Saharan region had been prepared for acceptance Islam faith in 7th century. Islam was one of the influential factors in the civilization of West Africa where Europeans had refused to penetrate due to the desert conditions. The cultural transformation entailed value for human life, novelty, and social prestige. Powerful kingdoms arose in West Africa due to Trans-Saharan trade. Soninke of Ghana and Mandinka in Mali participated in the trade and accumulated enormous wealth (Shillington 88). Wealth gave the kingdoms the power to maintain rule and influence in the trade. However, the region was not safe and secure due to the gold and ivory trade. Kingdoms would attack each other when traversing the desert. Robbers attacked and hijacked caravans and charioteers. Additionally, kingdoms required slaves and led to a reduction of people. People fled and moved southwards to escape the mistreatment. The spread of Islam brought tension in Western Africa as traditionalist communities resisted the influence of the religion and created a balance. The interactions between Arabs in North Africa and the trading parties from Western Sudan led to the development of infrastructures such as trade roots, monuments, and schools. According to Shillington, the development of fundamental trade centers such as Taghaza, Fezzan, Gao, Tadmeka, Wakata, and Kumbi-Saleh brought commercial and administrative organs that were responsible for trade of goods (p. 92). Communities gained gold, ivory and slaves to boost their economic power in the trade. Local leaders use forced labor to collect goods and make profits from the inferior trading communities. The economic benefits of Trans-Saharan trade were felt in Mali, Songhay and Bornu due to participation in

Report Essay Example | Topics and Well Written Essays - 7500 words

Report - Essay Example This difference is important to understand as it impacts not only businesses and investors but also governments in their policy formulation. This paper, therefore, aims to study whether different economic indicators influence large and small cap stocks by looking to answer the question: The key research question explored the relationship between economic indicators and stock prices small cap and as large cap companies in the US using available data for the last 10 years (from Jan 2001 to June 2011) based on 9 leading economic indicators and on two stock indices (one each for large and small cap stocks). The economic indicators were the independent variables while the stock price was the dependent variable in the multiple regression models developed for the two stock indices. Using public records, data were collected from publicly available financial statements of corporations. The proposed relationships were tested through regression analyses. Results indicated that the two stock cat egories are influenced by a different set of economic indicators except the Consumer Price Index, the Industrial Production Index (IPI), and the Consumer Confidence Index. The implication for economic change includes governments’ awareness of the need to monitor these factors as their Key Performance Indicators for measuring the impact and success of their past and future economic policy decisions on businesses. Table of Content Chapter 1Introduction 6 1.1Background and Context 6 1.2Objectives 6 1.3Achievements 7 1.4Overview of Dissertation 8 1.5Problem Description 8 Chapter 2Literature Review 10 Chapter 3Research Method 19 Chapter 4Data Analysis and Results 26 4.1Test of Variables 26 4.2Regression Analyses for the stock indices 26 4.2.1Regression analysis: S&P 500 27 4.2.2Regression analysis: S&P SmallCap 600 34 4.2.3Check for the predictability of regression models 43 Chapter 5Discussion, Conclusions, and Recommendations 46 5.1Summary 46 5.2Evaluation 49 5.3Future Work 51 R eferences 52 Appendix A: Normal distribution of dependent variables 55 Appendix B: Linearity of relation between economic indicators & S&P 500 56 Appendix C: Linearity of relation between economic indicators & S&P SmallCap 600 57 Appendix D: Clarification of concepts and terms 58 Qualifications & Experience 62 Abstract 1 Table of Contents 2 Chapter 1 Introduction 5 Chapter 2 Literature Review 9 Chapter 3 Research Method 18 Chapter 4 Data Analysis and Results 25 Chapter 5 Discussion, Conclusions, and Recommendations 43 References 49 Appendix A: Normal distribution of dependent variables 51 Appendix B: Linearity of relation between economic indicators & S&P 500 52 Appendix C: Linearity of relation between economic indicators & S&P SmallCap 600 53 Appendix D: Clarification of concepts and terms 54 Qualifications & Experience 58 List of Tables Table 1 9 Table 2 27 Table 3 28 Table 4 29 Table 5 29 Table 6 30 Table 7 34 Table 8 36 Table 9 36 Table 10 37 Table 11 38 Table 12 39 Table 13 39 Table 14 46 List of Figures Figure 1: Histogram of regression model residuals for S&P 500 32 Figure 2: Variance of residuals for S&P 500 regression model 32 Figure 3: Scatter plot of residuals for regression model for S&P

Web Project-Online File Storage Research Paper Example | Topics and Well Written Essays - 500 words

Web Project-Online File Storage - Research Paper Example Today, there are a number of backup solutions available that enables us to store files in increasingly popular cloud, and so there is no reason of foregoing the routine of backing up important data. Online data is becoming the most popular method of storage despite the availability of traditional storage devices such as USB flashes, hard drivers, and DVDs. To make it simpler online storage of data method involves storing data in the Web; thus, allowing one to access his/her information from anywhere globally. The data that one is able to store ranges from all information on an individual or company’s computer hard drive, image storage, email accounts, and text files which are made available on demand through the web servers (Broberg & Buyya 2011). The greatest benefit of online storage of data as divergent to the other methods is because of the nature of the information that is being stored virtually; it cannot be damaged or lost. This is true because most of the online data storage websites have additional feature of the stored data in their backup. Even if one accidentally deletes the data stored, the same version will always be available. There are also features that allow one to replicate and adapt the files. Another advantage is that it can be easily accessed by people who travel and are unable to access their laptops. It is also convenient for those who lose their data to computer crashes or those who forget to bring data CDs (Broberg & Buyya 2011). Lastly, it allows employees and collaborators to easily log in and access data. This may conveniently serve small business saving them some money, because networking computer will not be necessary. There are a few issues that may also arise when using online storage solutions. Security is the prime concern with a great possibility of unauthorized persons getting access to the password and the user name through other methods. This is highly risky if one uses very similar password for every site.

Sunshine State Share Dealing Limited (SSSDL) Support System Essay

Sunshine State Share Dealing Limited (SSSDL) Support System Development - Essay Example This research will offer a deep insight into the system’s business and IT-based aspects. This paper will also outline some opportunities and challenges that Sunshine State has faced in the development of the system. During the system development for the Sunshine State Share Dealing Limited (SSSDL) business, the management has faced a lot of problems and challenges. The new project at the Sunshine State is about handling and managing its large business departments. In this scenario, the business has faced a lot of challenges regarding this system implementation. In this scenario, the main challenge is about the software development that was essential to support all the business processes. Additionally, in this large size project the basic challenge was to meet the needs and requirements of all the type of system users, for instance, management, customers, and working staff. In addition, the new system was indented to fulfill all the working aspects of users, since this system was a multi-site, multi-supplier, multi-system project. Moreover, another main challenge was to meet the project deadline that simply could not be missed. Thus, all these challenges and issues made this project more sensitiv e to manage and develop. This section outlines some of the key factors in the successful development of the Share Dealing system. Sunshine State Share Dealing Limited deals with more than 5 million customers and covers around 20% of the Australian mortgage market. Thus, to manage such a large size business the manual and paper-based techniques were not helpful. In this scenario, Sunshine State Share Dealing Limited was also competing on an equal footing with the existing 4 major banks and to raise the capital they decided to abandon their traditional mutual status. In this working environment, the business was not able to gain a better competitive edge and effective market through the traditional ways of working and business management technology.

The ways in whih characters adapt to the changing circumstances of Essay

The ways in whih characters adapt to the changing circumstances of their lives - Essay Example In John Steinbecks novel, East ÃŽ ¿f Eden, the characters are unusual, realistic, and interesting, all which contribute to the appeal ÃŽ ¿f the novel. These characters appeal to the reader, and the reader is able to sympathize with most characters, from the most upstanding citizen to the ruthless seductress. Faye, although the owner ÃŽ ¿f a whorehouse, is depicted a respectable, honourable woman, by the description Steinbeck gives her. Although she owns a whorehouse, she has made it the cleanest, and in many ways, the best whorehouse ÃŽ ¿f all the others around her. Steinbeck regards her as being a good citizen, and a moral person. All ÃŽ ¿f the girls who work in her whore house respect Faye, and look up to her. As the interaction between Kathy and Faye persist, many ÃŽ ¿f the girls who work at Fayes become fearful ÃŽ ¿f her safety. Kathy slowly poisons Faye, and when Faye dies, the tone at the whorehouse drastically changes, as the girls become more suspicious ÃŽ ¿f Kate. Faye, being the good person that she was, loved Kate, and left her business to her. When Kate took over, the girls suddenly live in fear ÃŽ ¿f Kate. Kate is probably the most interesting, and gripping character in East ÃŽ ¿f Eden, due to her sedectiveness, and her evil personality. In Steinbecks first description ÃŽ ¿f Kathy he depicts her as a victim ÃŽ ¿f genetics. It was just a mere coincidence that such an evil human arose from her two good parents. The reader can sympathize that she is a victim ÃŽ ¿f nature, a common trait ÃŽ ¿f realism. Her actions are merely a result ÃŽ ¿f here natural instincts to be bad. Her character is the most complex in the novel. Her most interesting aspect is her reaction to alcohol, another interesting trait that draws the reader in. Her actions shock the reader, her boldness and independence was a reflection ÃŽ ¿f the womens movement that is still a major appeal to the women ÃŽ ¿f today. The introduction ÃŽ ¿f Kathy in chapter 8 was a turning point in the novel, since her

Contrast of Carrefour and Wal-Mart Essay Example for Free

Contrast of Carrefour and Wal-Mart Essay Since the American entrepreneur, Clarence Saunders, opens his first Piggly Wiggly store in Memphis, Tennessee, in 1916, the concept of self-service store has swept the globe. With the largest population in the world, China is expected to be the world’s biggest retail market which is now already the world’s fastest-growing market. ( Anon, 2011:1) As the world’s first and second largest retail groups, Carrefour and Wal-Mart are one their way piling in. However, with 5000 years of traditional history and 30 years of planned economy, china has already formed its own market tradition. Though, the two giants both need to face the special Chinese market, in some aspects, they use different strategies and have different market feedback. This essay will illustrate the similar strategies the two retail groups have been using and also analyze the ways they use to adapt to the Chinese market differently. To begin with, for opening the Chinese market, Carrefour and Wal-Mart both choose to cooperate with the local commercial. $1 billion was given to Wal-Mart’s 100 hypermarkets’ supply chain, ranging from food to electronics (Shu-Ching, 2010, P. 1). Similarly, Carrefour also tried to adapt to local conditions, i. . cooperate with Lianhua Supermarket Company in Shanghai. The reasons why they cooperate with local partners is not just because of the legal considerations, but also to have a deep understanding of the difficult and complex Chinese market (Peter, 2006, P. 6). Nevertheless, they use different strategies according to different company development plan. Wal-Mart focuses more on the long term partnership nationally or even internationally. Considering the different regional culture and local policy, Carrefour changes partnerships by local markets (Peter, 2006, P. ). Furthermore, Carrefour adopts different strategy throughout all its global market, focusing on locally sourced products, as well as its local management teams, which are almost comprised of domestic employees to be more familiar with the local tastes. Also, on purchasing larger market shares, expansion strategy is common used by the two retail market giants. Since Carrefour opened its first store in china in 1995, it has already operated 73 hypermarkets in 29 cities which makes about $2 billion profit (Peter, 2006, P. ). Likely, 338 shops in 124 cities makes Wal-Mart $7 billion annually which is just a little bit lower than whole Carrefour shops’ profit (Anon, 2011, P. 2). Moreover, they both regard second- and third-tier cities as a good growth opportunity, and have already built shops in western cities which are not so developed. Even though, they perform different strategies in expanding their market. Firstly, Wal-Mart aims at making central distribution center, while local distributors are more considered by Carrefour. Secondly, hypermarkets often constitute larger shopping and entertainment complexes, therefore, a large amount of Carrefour stores are built at the city center for customers to go by foot or by bike. Comparing to this, edge-of-town is where Wal-Mart outlets often located, where customers can have large parking facilities or even shuttle bus provided (Moreau, 2008, P. 1). Last but not the least, Carrefour builds its stores based on the organic expansion primarily. By contrast, Wal-Mart combines organic growth with large-scale acquisitions, which leads to its Chinese revenues doubled. Lastly, to perform well in Chinese tradition market, Carrefour and Wal-Mart both have their changes in shops and marketing. On the one hand, for saving a million yuan in electricity and water costs, two retail chains’ common aim is to achieving â€Å"zero-carbon† stores by next year, which forces them to open a range of new energy saving stores in China, such as using waste gas to heat water and fluorescent lights, making use of natural lighting and integrating energy-saving technologies (Anon, 2009). On the other hand, to discover new growth areas in retail profit, selling medicine has been put on the agenda. The two giants have already been in close contract with the Ministry of Commerce on the medicine retail business and affirming that world’s largest retailer’s distribution network will be covered by medicine sales (Anon, 2005). Although there are a lot of similar strategies in market development, the two retail groups also have their different development focus. In the first place, Wal-Mart awards its employees based on profit-sharing stock, which will improve employees’ skills, trust and constant work, while Carrefour focus more on salaries. In addition, Carrefour adopted a multi-format strategy, i. e. open smaller outlets in the discount format to create another profit growth, while Wal-Mart develops its presence in the hypermarkets format exclusively (Moreau, 2008, P. 3). In details, proved to be a dynamic format competing against hypermarkets operators, department stores get a CAGR increase of 9%, 2002-2007. Therefore, department stores sales continue to be boosted by the expansion period decided by Carrefour (Moreau, 2008, P. 2).