http://www.risc.uni-linz.ac.at/people/gbodnar January 23, 2005 2 Contents 0 Introduction 0.1 Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 Information Sources . . . . . . . . . . . . . . . . . . . . . . . . . 1 Data Modeling 1.1 Introduction . . . . . . . . . . . . . . . . . 1.2 The Entity-Relationship Model . . . . . . 1.2.1 Entities, Attributes, Relationships 1.2.2 Classification of Relationships . . . 1.2.3 Keys . . . . . . . . . . . . . . . . . 1.2.4 Entity-Relationship
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pcs or via the Microsoft Software Developer Network (MSDN) is a useful tool for drawing Entity Relationship Diagrams (ERDs). If you have questions on using Microsoft Visio, watch the following tutorials on using Visio to do entity-relationship modeling: • Part 1 • Part 2 • (there is a Part 3 in the series, but it contains some bad information) 1. Review Question #3 (four points). Why are entity integrity and referential integrity important in a database? Entity integrity
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* Time allotted: 3 Weeks * Deliverable: A list of scheduled interviews and observations, text of the questionnaires * Analyzing Data: The data gathered will be analyzed to determine business rules and preliminary data modeling. * Time allotted: 2 weeks * Deliverable: List of business rules to be reviewed, basic entities and attributes * Normalization: The data model will be completed with entities and relationships normalized. * Time
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COM 330 Lab 2: Access Integrity and Queries In this lab you will connect two tables with a relationship using a foreign key and investigate simple queries using QBE and SQL using Microsoft Access™. 1. Prepare the file: a. Download the file COM330LAB02.ACCDB from the class website. b. Rename the file COM330LAB02.ACCDB to include your initials before the period. (e.x., COM330LAB02BR.ACCDB for someone who’s initials are BR. 2. Inspect the tables and create forms: c. Open
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tables from a logical point of view. To demonstrate the difference between fact and dimension tables, consider how an analyst looks at business performance: * A salesperson analyzes revenue by customer, product, market, and time period. * A financial analyst tracks actuals and budgets by line item, product, and time period. * A marketing person reviews shipments by product, market, and time period. The facts--what is being analyzed in each case--are revenue, actuals and budgets, and shipments
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Master Thesis Computer Science Thesis no: MCS-2010-23 June 2010 Principles for Distributed Databases in Telecom Environment Imran Ashraf Amir Shahzed Khokhar School of Computing School of Computing Blekinge Institute of Technology Blekinge Institute of Technology Box 520520 Box SE – 372372 Ronneby SE – 25 25 Ronneby Sweden Sweden This thesis is submitted to the School of Computing at Blekinge Institute of Technology in partial fulfillment of the requirements for the degree of Master
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Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Chapter 8 Chapters 7, 8, and 9 Chapters 3, 6, and 26 Chapters 4, 5, and 13 Chapters 4, 5, and 14 Chapters 15 and 16 Chapter 11 Chapter 12 Chapters 13 and 14 Chapter 1 presents ERWin, a popular data modeling software that allows database designers to represent Entity-Relationship diagrams and automatically generate relational SQL code to create the database in one of several commercial relational database management systems such as Oracle or Microsoft
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INSTITTE OF ACCOUNTANCY ARUSHA PRINCIPLES OF DATABASE SYSTEMS (ITD 06206) ODIT II – 2014/2015 - SEMESTER 4 (07/01/2015) Review Questions – 1 1. List four examples of database systems that you know. 2. Discuss the meaning of each of the following terms: * data; * Database; a collection of related data. a database is also defined as a self-describing collection of integrated records. * Database management system; the software that manages and controls access to the
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Name Professor Course Date Competitive Negotiation (Source Selection) Under FAR Part 15 Contract law seeks to ensure that negotiations are done in an open and impartial manner to allow aggrieved parties an opportunity to protest the allocation of bids by appealing to the US General Accountability Agency (Manuel and Schwartz 6). Though such protests are usually rare, the aforementioned body has heard numerous cases in its wake (Gordon 11). For example, in 1999, the Department of Commerce
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INSTRUCTIONS: 1. Form a group – consist of FOUR (4) students 2. Answer all the questions below. FORMAT of YOUR REPORT: 1. Cover – consist of your name and student id 2. Content – * Separate the answer for Chapter 5 and Chapter 6 * PART A: Answer all the questions and please include all the questions as well. * PART B: Discuss the case studies and answer all the questions given. 3. References – include the link or your references Due of Submission: 10th May 2016 (Tuesday) before
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