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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Key concepts Let me start by naming a few of the most important concepts in relational database design. A basic understanding of these will be required to understand the rest of the article. * Primary Key (PK) A column with a unique value for each row. Although not all database management systems (DBMS) require you to put a PK into each table‚ from a design perspective a PK is a requirement. No table should be without one. * Foreign Key (FK) These define relationships between tables. When
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Proposal of a Sound System AUD407 Advanced Audio System Design Table of Contents Overview 3 Site Assessment 4 Environmental Analysis 5 System Design Requirements 5 The System 8 Figure 1: Line Array Configuration 8 Figure 2: Jsub Frequency Map 9 Figure 3: Line Array Analysis 10 Foldback 12 Figure 4: Foldback Speaker Placement 12 Mixer/Desk 13 Signal Flow 13 Sound Reinforcement Analysis 14 “Rock” Band 14 Choir 14 FOH 14 Amp 15 Foldback 15 Stage
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System Design Project – Part II Menue J. Fang University of Phoenix October 22‚ 2012 Abstract The current environment‚ for Riordan ’s departments‚ is requiring increased labor in order to process information. The slow consolidation of the operational processes of two divisions with different operation software has become a financial threat to Riordan Manufacturing. Each of the divisions lacks modern technology that is needed to run a highly efficient corporation. Therefore
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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 • Stock market prices Universe of Discourse A database is a model of some aspect of the reality of an organisation. It is conventional
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SOFTWARE REQUIREMENTS SPECIFICATION(SRS) FOR AIRLINE DATABASE Table of Contents 1. Introduction 1.1 Purpose 1.2 Document Conventions 1.3 Intended Audience and Reading Suggestions 1.4 Project Scope 1.5 References 2. Overall Description 2.1 Product Perspective 2.2 Product Features 2.3 User Classes and Characteristics 2.4 Operating Environment 2.5 Design and Implementation Constraints 2.6 Assumptions and Dependencies 3. System Features 4. External Interface Requirements 4.1 User Interfaces 4.2 Hardware
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Why good database design is important in performing data operation? A good design is significant in performing data operation. Without the good design‚ it is difficult to make relationship with other database and it will not run competently and also securely (Knight‚ 2011). This report will discuss the important of good database design‚ which are crucial for the business in performing operation and making a decision. Firstly‚ with the good design‚ data will be stored in consistent form. Appropriately
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Insider Trading | In one paragraph supported by your text and other research‚ describe a recent example of insider trading. Determine whether the case met the elements of insider trading established by the Supreme Court in U.S. vs. O’Hagen‚ described in the text. Respond to at least two of your classmates’ post In this case number (2012-255) concerning Insider Trading Ring Investment Banker Illegal Tips on Impending Merger on Dec 5‚ 2012. The Securities and Exchange Commission today charged an
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Assignments Requirements 1. Look up the definition of functional dependency. Can you find a good example? In relational database theory‚ a functional dependency is a constraint between two sets of attributes in a relation from a database. Cars Suppose one is designing a system to track vehicles and the capacity of their engines. Each vehicle has a unique vehicle identification number (VIN). One would write VIN → Engine Capacity because it would be inappropriate for a vehicle’s engine to have
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for specific cures is based on the data that is collected from health care organizations. There are also government organizations that will pave the road for programmers to be able to develop the framework of the database. The data that is collected from an electronic medical record system is imperative in supporting new knowledge of the manner in which a person’s health can be prolonged‚ or even saved. This memo is to provide you and your company an overview on the sources required to achieve and
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