– In the relational model, the conceptual schema presents data as a set of tables. • DBMS maps from conceptual to physical schema automatically. • Physical schema can be changed without changing application: – DBMS must change mapping from conceptual to physical. • Referred to as physical data independence. 5 Conceptual Data Level (con’t) Application Conceptual view of data DBMS Physical view of data 6 External Data Level • In the relational model, the external schema
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modifications and implementations if needed. Services: The scan shows the use of the following services: Services Use Msrpc A tool for running processes on a remote computer. netbios-ssn It provides services related to the session layer of the OSI model allowing the applications on a separate computer to communicate microsoft-ds This port replaces the notorious Windows NetBIOS trio (ports 137-139), for all versions of Windows after NT, as the preferred port for carrying Windows file sharing and
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software development in which development proceeds sequentially through a series of phases. Progress "flows" from one stage to the next, much like the waterfall that gives the model its name. Stages 1.Project Planning 2. Requirement gathering 3.Design 4.Develop 5.Testing 6.Production 7.Support Advantages The waterfall model, as described above, offers numerous advantages for software developers. First, the staged development cycle enforces discipline: every phase has a defined start and end
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DATABASE SYSTEMS To understand what drives database design, you must understand the difference between data and information. Data are raw numbers or other findings which, by themselves, are of limited value to decision makers. Information, on the other hand, is the result of organizing, processing, and interpreting data, thus transforming the findings into facts that are useful to decision makers. For example, the number of new users your clinic serves in a month means little until you compare it
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Access point Network cloud Ethernet connection Serial Line connection Wireless connection Virtual Circuit The OSI Model As you study this section, answer the following questions: What is the OSI model and why is it important in understanding networking? How does the third OSI model layer relate to administering routers? Which OSI model layer is concerned with MAC addresses? What protocols correspond to the Presentation and Session layers? What is the difference between
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analytical An analytical framework for evaluating e-commerce business models and strategies Chung-Shing Lee The author Chung-Shing Lee is Director of Electronic Commerce Resource Center and an Assistant Professor of Information Systems and Technology Management in the School of Business at Pacific Lutheran University, Tacoma, Washington, USA. Keywords Internet, Economy, Innovation, Strategy Abstract Electronic commerce or business is more than just another way to sustain or enhance existing business
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Business Proposal Sheldon Hensley BIS/220 March 19, 2012 Ross Sines Business Proposal Rock Bottom Records A Business Proposal to Add E-Commerce to the Company Prepared for Rock Bottom Records Prepared by Sheldon Hensley March 19, 2012 Table of Contents Executive Summary 4 Introduction 5 Background 5 Proposed Action 5 Cost Table 8 Executive Summary Doing business in today’s economic structure is not the same as it was 20 years ago
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Competitive Advantage: Global Delivery model Operationally Infosys’s competitive advantage is its Global Delivery Model. Infosys, started off by provided onsite service to its global clients. Later in order to cut costs it began to complete projects at its Indian offshore development centers and then implement them at the clients' places. This posed several challenges. Software development is a highly iterative process and as there was no service provider at the clients' locations, it led to
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file:///C|/Documents%20and%20Settings/Administrator/Deskto...0BILL%20-%20BUSINESS%20AT%20THE%20SPEED%20OF%20THOUGHT.TXT BUSINESS AT THE SPEED OF THOUGHT by bill Gates ALSO By BILL GATES The Road Ahead BUSINESS AT THE SPEED OF THOUGHT: USING A DIGITAL NERVOUS SYSTEM BILL GATES WITH COLLINs HEMINGWAY 0 VMNER BOOKS A Time Warner Company To my wife, Melinda, and my daughter, Jennifer Many of the product names referred to herein are trademarks or registered trademarks of their respective owners. Copyright
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Database Design Paper Joseph Schmosef University Of Phoenix (ecampus) DBM/380 Sunday, April 01, 2012 “A database is a structured collection of records or data that is stored in a computer system. In order for a database to be truly functional, it must not only store large amounts of records well, but be accessed easily. In addition, new information and changes should also be fairly easy to input.” (tech-faq.com) To ensure usefulness over the long-term, databases should be built with high
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