PHYSICAL DATABASE DESIGN EXAMPLES Example 1 – Consider the following relational database for the Super Baseball League. It keeps track of teams in the league‚ coaches and players on the teams‚ work experience of the coaches‚ bats belonging to each team‚ and which players have played on which teams. Note the following facts about this environment: The database keeps track of the history of all of the teams that each player has played on and all of the players who have played on each team. The
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How Much Can the Internet help GM? 1. Analyze GM using the competitive forces and value chain models. Porter’s competitive forces model Porter’s value chain model 2. Evaluate the current business strategy of GM in response to its competitive environment. What is the role of Internet technology in that strategy? How successful is that strategy? The current business strategy of GM in response to its competitive environment is based on the belief that by intensively weaving Internet
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A relationship is an important component of a relational database. A relationship exists between two tables when one or more key fields from one table are matched to one or more key fields in another table. The fields in both tables usually have the same name‚ data type‚ and size. It also helps to further refine table structures and minimize redundant data. The purpose of a query is to retrieve information from a table or tables‚ which can be based on some type of criteria. To put it simply‚ a query
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Analysis – Genesis and Catastrophe Short introduction Genesis and Catastrophe by Roald Dahl is a short story included in the book Kiss Kiss (1960)‚ a collection of macabre short stories that are known to shock the reader. Setting The story takes place in Braunau‚ Austria‚ in 1889. A woman‚ Klara‚ is in the hospital giving birth to a baby boy and is very anxious‚ wondering if the newborn is going to pull through. You can include a spoiler here and tell your reader that the baby boy
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ROLE OF INVENTIONS AND DISCOVERIES IN THE ESTABLISHMENT OF RADIO This write up discusses the role of inventions and discoveries in the establishment of radio. However some attention would first be directed to explaining the importance and uses of radio and radio waves as a communication device before diverting focus to discuss some inventors who played significant roles in establishing radio. The discussion will as well highlight some modern developments in the radio industry. Radio continues to
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Chapters 1 - 3: Chapter 5: Chapter 6: Chapter 7: Chapter 12: Chapter 14: Chapter 16: Revise as for Assignment 01 Entity relationship modelling Advanced data modelling Normalisation of database tables Transaction management and concurrency control Distributed database management systems Database connectivity and web development Question 1 What is a composite entity‚ and when is it used? [4 marks] [8 marks] Question 2 Briefly‚ but precisely‚ explain the difference between single-valued attributes
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Effects of American Culture on the Cycle of Poverty Poverty‚ which involved 43.1 million Americans in 2015‚ is directly correlated with race and gender in American cities (Kollar et. al.). As a result of years of discrimination and segregation‚ different American social groups have been unable to escape the cycle of poverty. Despite years of fighting for equal rights to make our country more equal‚ racial and gender disparities have persisted. Providing equal opportunity and trust to the people
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History of Database Technology Past and Present The term database was popularized with the growth of the computer industry and is typically thought of as software used to store‚ index‚ manipulate‚ and retrieve information (Vaughn). Database software has been in use since the Census Bureau used a punch card system to meet the requirements for the collection‚ sorting‚ and reporting of data for the 1890 census (National Research Council). These earliest databases were flat file databases. The flat-file
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The cell cycle‚ or cell-division cycle‚ is the series of events that take place in a cell leading to its division and duplication that produces two daughter cells. In cells without a nucleus‚ the cell cycle occurs via a process termed binary fission. In cells with a nucleus‚ the cell cycle can be divided in three periods: interphase—during which the cell grows‚ accumulating nutrients needed for mitosis preparing it for cell division and duplicating its DNA—and the mitotic phase‚ during which the
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1. Describe the relations that would be produced by the following relational algebra operations a) ПhotelNo(σprice>100(Room)) It will produce a single attribute (hotelNo) giving the number of hotels room prices greater 100. b) σHotel.hotelNo=Room.hotelNo(Hotel X Room) A join produce of hotel and room containing all the attributes of both. c) ПhotelName(Hotel Hotel.hotelNo=Room.hotelNo (σprice>100(Room))) It is a join of hotel and room with the price greater than 100. d) Guest(σdateTo>’1-June-12’(Booking)
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