The entity-relationship model (or ER model) is a way of graphically representing the logical relationships of entities (or objects) in order to create a database. entity type is a collection of entity instances sharing similar properties Strong Entity Vs Weak Entity An entity set that does not have sufficient attributes to form a primary key is termed as a weak entity set. An entity set that has a primary key is termed as strong entity set. A weak entity is existence dependent. That is the
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processes with intelligent computing solutions‚ I want to return to academics. And from the various range of courses available‚ postgraduate studies in Information Technology Solution(Database Development Profile) at Humber College matches my requirements in most of the areas as I want to enhance my knowledge in Databases. After graduating from Fr. Conceicao Rodrigues College of Engineering‚ Mumbai University‚ the very first thing in my mind was to go for higher studies and the most obvious option
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Environmental Scan Paper � PAGE * Arabic �2� Running Head-ENVIRONMENTAL SCAN OF AMAZON AND NIKE The Internal and External look of Amazon and Nike Jaime Enriquez MGT 498 January 31‚ 2011 Eligah King ENVIRONMENTAL SCAN - AMAZON AND NIKE In today’s businesses e-commerce is becomingly more effective in the modern world. Two major companies stand out‚ one solely relying on online business and the other both store and online services. Most individuals are familiar with these companies‚ Amazon
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Microsoft 70-462 Exam Questions & Answers Number: 70-462 Passing Score: 700 Time Limit: 300 min File Version: 52.2 Microsoft 70-462 Exam Questions & Answers Exam Name: Administering Microsoft SQL Server 2012 Databases Exam A QUESTION 1 DRAG AND DROP You administer several Microsoft SQL Server 2012 servers. Your company has a number of offices across the world connected by using a wide area network (WAN). Connections between offices vary significantly in both bandwidth and reliability. You need
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Running Head: Database Development Case Study: Database Development Maintenance plans and activities that could be performed in order to improve data quality In order to improve the quality of datasets various activities to be performed like error detection and correlation‚ process design and process control and improvement In error detection method‚ errors are detected by comparing data to a correct baseline and by checking for missing values. By examining time stamp incorrected
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All businesses regardless of their particular industry will be faced with the challenges of dealing with different environments. A couple of companies that will be discussed throughout this paper are Apple‚ Inc. (Apple) and Dell‚ Inc. (Dell). Both are successful technological companies. Operating in the technology field they pay a great deal of attention to technological factors and trends in the industry. Their internal and external environments can be scanned and evaluated using the PESTEL tool
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Final Exam CSE232‚ Spring 97‚ Solutions Name: Time: 2hrs 40min. Total points are 148. A. Serializability I (8) Consider the following schedule S‚ consisting of transactions T1‚ T2 and T3 T1 T2 T3 w(A) r(A) w(B) w(B) w(B) w(A) r(B) r(B) • Give the precedence graph for S • Is S conflict serializable ? Justify your answer. • Is S view serializable ? Justify your answer. .Solution T1 T3 T1 T2 • • Precedence Graph S is not conflict serializable because there
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What kind of databases and database servers does MySpace use? A database is an organized collection of data. A database server is a computer program that provides database services to other computer programs. In the initial phases‚ MySpace operated with two web servers (a computer application that helps to deliver web content that can be accessed through the internet) communicating with one database server and a Microsoft SQL Server database(as s database‚ it is a software product whose primary
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Why are data and databases essential business resources? Data is very important to any business. Data gives you an answer whether the business is going to rise or fall. Data is the answers to the questions like what the attendance for the day is or what the employee satisfaction level is or what issues we have in the production for a particular period or what is revenue for a particular period in business. And‚ keeping these data in a systematic way in a computer is known as database so that it is
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TRADITIONAL FILE ORGANIZATION & MANAGEMENT TECHNIQUES • DESCRIBE HOW DATABASE MANAGEMENT SYSTEM ORGANIZES INFORMATION * 7.2 © 2002 by Prentice Hall LEARNING OBJECTIVES • IDENTIFY TYPES OF DATABASE‚ PRINCIPLES OF DATABASE DESIGN • DISCUSS DATABASE TRENDS * 7.3 © 2002 by Prentice Hall MANAGEMENT CHALLENGES • TRADITIONAL DATA FILE ENVIRONMENT • DATABASE APPROACH TO DATA MANAGEMENT • CREATING DATABASE ENVIRONMENT • DATABASE TRENDS * 7.4 © 2002 by Prentice Hall MANAGEMENT CHALLENGES 1. ORGANIZATIONAL
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