CHAPTER 4 RELATIONAL DATABASES SUGGESTED ANSWERS TO DISCUSSION QUESTIONS 4.1 Contrast the logical and the physical view of data and discuss why separate views are necessary in database applications. Describe which perspective is most useful for each of the following employees: a programmer‚ a manager‚ and an internal auditor. How will understanding logical data structures assist you when designing and using database systems?</para></question><question
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1 Introduction Database is any collection of data or information‚ that is specially organized for rapid search and retrieval by a computer. Databases are structured to facilitate the storage‚ retrieval‚ modification‚ and deletion of data in conjunction with various data-processing operations. A database consists of a file or a set of files. The information in these files may be broken down into records‚ each of which consists of one or more fields. Fields are the basic units of data storage
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of existing information technology services even as it dramatically reduces the upfront costs of computing that deter many organizations from deploying many cutting-edge IT services (J.Staten‚ 2009). Cloud computing represents a convergence of two major trends in information technology — (a) IT efficiency‚ whereby the power of modern computers is utilized more efficiently through highly scalable hardware and software resources and (b) business agility‚ whereby IT can be used as a competitive tool
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<b>HISTORY</b><br>The Library of congress was established by an act of congress on April 24‚ 1800. It was originally housed in the United States capitol. The collection‚ which stared out small at 740 volumes‚ slowly increased to over 3‚000 volumes by 1814. That year‚ though‚ the British along with the capitol burned those books during the assault on Washington.<br><br>To rapidly replace the collection‚ Thomas Jefferson offered his personal library to congress at no cost‚ describing the nature of
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different databases used for searching articles on online. PubMed are mostly used for biomedical and clinical journals. The data information are organized based on the date‚ author‚ tittle and type of article. This made it easier to search and retrieve journal articles faster. PubMed have an advance function like MeSH term subheading but Google scholar lack MeSH function (Jean-François‚ Laetitia‚ & Stefan‚ 2013). Also‚ the content of the articles on PubMed are well structures with the major topics
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Differences of the Three Major Colonial Empires in the New World The three main colonial empires in the New World were the British‚ French‚ and Spanish empires. They had various differences in societal‚ economic‚ political‚ and religious outlooks. They also left behind some legacies‚ which even today seem to resonate. The British Colonial Empire thought that gold was everywhere‚ but they never found any. They had money from mercantile trade colonies and they were economically independent by
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Chapter 1 THE PROBLEM AND ITS SCOPE Introduction Library management system is an aspect or branch of information management system that keeps the records of both the library users‚ books in the library and the activities that is going on in the library‚ activities like borrowing books and returning books. Information management in general is the collection and management of information from one or more source and distribution of the information to one or more audience. This sometimes
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in the united states became a major conflict It slowly began changing the views of many people‚ protest commenced and the citizen of the united states took action to change history. Opinions may differ when discussing what the most crucial point in the Civil Rights movement was but no one can deny that each and every event that took place between 1950 to 1968 changed the rights for African Americans in the United States. Throughout my essay I will focus on three major events during this point and
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Jesse Bober P.6 Topic 1- Describe the three major phases of the english language and the major changes that happended When England was established there were several kingdoms and the most advanced one was Nurthumbria. It was this period that the best of the Old English literature was written ‚ including the epic poem Beowulf. In the 8th century Nurthumbrian power declined ‚ West Saxons became the leading power. The most famous king of the West Saxons was Alfred the Great
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What is the first thing you think of when you hear the word “horror”? For some people‚ it might be the latest Paranormal Activity movie‚ or the thought of ghosts or demons. However‚ for the Jews in the 1930’s and 1940’s‚ all of their horrors came true‚ without the help of the supernatural. “Monsters exist‚ but they are too few in number to be truly dangerous. More dangerous are the common men‚ the functionaries ready to believe and to act without asking questions‚” – Primo Levi. Today‚ you will
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