Relational Model: Data Structure The relational database model consists of three parts: data structure (this section)‚ data integrity‚ and data manipulation. The data structure model defines how to represent data. Most basic to the data structure model is the relation which is illustrated below: A relation‚ which is the most basic part of the data structure model‚ has two parts: relation heading and relation body: * Relation Heading A relation heading is a set of (attribute‚ domain) pairs
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What is the difference between a Democracy and a Republic? Almost ALL of the social problems in this country are derived from the fact that Americans don’t even know what kind of government they have! If you are like most people‚ you think that the United States is a democracy. If you do‚ then you are wrong! Recite the pledge of allegiance. Notice that it says "...and to the republic for which it stands." Now open your copy of the constitution to Article IV‚ Section 4. (You do have a copy
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It was only after the 1990 after the demise of the communist regime in Eastern Europe that Albania opened its doors to the modern capitalist world and the economy switched from state to private administration. Construction and real estate were the first and the biggest industries that reflected this drastic change on the capital ownership‚ demographic movements and cultural developments of the society. The demand for construction mainly for housing was rapidly rising but construction was seen as
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Introduction What is “Data”? ► A representation of raw facts which has no meaning assigned ► Generally‚ operations are performed on data or data items to supply some information about an entity. What is a Database? A database is an integrated and structured collection of stored operational data used (shared) by application systems of an enterprise Examples of Databases • Medical records • Bank accounts • Stock control • Telephone directories
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Do you think advertising to children should be banned? Why or why not? It is an established fact that companies might benefit from right understanding of the children’s role in purchasing process. It is considered to be the case adults are loyal to those brands which they are used to enjoy in their childhood. Moreover‚ getting elder‚ children may influence their parents quite deeply. Parents tend to work more and earn more to make up the deficiency of the time to spend with their children by making
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Mining Changes for Real-Life Applications Bing Liu‚ Wynne Hsu‚ Heng-Siew Han and Yiyuan Xia School of Computing National University of Singapore 3 Science Drive 2 Singapore 117543 {liub‚ whsu‚ xiayy}@comp.nus.edu.sg Abstract. Much of the data mining research has been focused on devising techniques to build accurate models and to discover rules from databases. Relatively little attention has been paid to mining changes in databases collected over time. For businesses‚ knowing what is changing and how
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Database Design Scenario Currently a school uses a non-computerised database system to store the following information about its students: roll class‚ surname‚ first name‚ guardian ’s name‚ address‚ student ’s date of birth‚ gender‚ sport house‚ emergency-contact telephone number‚ mailing name‚ list of subjects offered‚ and subjects in which the student is enrolled. The system takes up a large amount of space‚ has many duplicated entries some of these with mistakes and it is time consuming
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Question 3 what reading have you enjoyed most in the past year and why? The reading I have enjoyed the most in the past year is ‘To kill a mocking bird’ by Harper Lee. The story’s main theme is about racial discrimination and gender inequality. It used a child’s point of view to tell the story so I can throw myself into the main character Scout. Thanks to her naivety‚ the injustice and the hypocrisy of Maycomb folks are enhanced. The most exciting part of the story is the fight in the court. Scout’s
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3. Kalin’s belief and courage. With no savings and precious little knowledge of the import business‚ Kalin was brave enough to refuse his Bulgarian winery contact when it is not beneficial for him. He then worked hard to raise the capital – with some help from his friends‚ and stopped working at the restaurant. Even though the first container was a disappointment‚ he never gave up in overcoming any obstacles. His belief of success attreacted other people who also believe in the same thing‚ and
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A game show is a show in which members of the public or celebrities‚ either on their own or as a team‚ play a game which is likely to involve answering quiz-like questions for points or prizes. Game shows often offer money or holidays to contestants as prizes. An obvious example of this is the show “Who wants to be a Millionaire?” in which contestants‚ if successful may win up to one million pounds. Most game shows now appear on television although a few remain on the radio. In this essay i will
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