Data Anomalies Normalization is the process of splitting relations into well-structured relations that allow users to inset‚ delete‚ and update tuples without introducing database inconsistencies. Without normalization many problems can occur when trying to load an integrated conceptual model into the DBMS. These problems arise from relations that are generated directly from user views are called anomalies. There are three types of anomalies: update‚ deletion and insertion anomalies. An update anomaly
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NORMALIZATION The process of normalization begins with a user view of some kind (Report‚ Table‚ Screen display‚ Document‚ etc...). This view should be about some kind of important data (Invoice‚ Purchase order‚ Project details‚ Registration form‚ etc....). Example: Consider the following Project Management Report Project Management Report Project Code: PC010 Project Manager: M. Philips Project Title: Database System Project budget: 240.000$ Employee No. Emp. Name Dept
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CAB VEHICLE MAINTENANCE MONITORING FOR HUELAR-PALERMO TRANSPORT SERVICE A Case Study Presented to The Faculty of STI Global City In Partial Fulfillment Of the Requirements for the Theory of Database By: Danizon Montallana Miyelcen Malou Dabu Ely Ynson Mr. Michael Pinero & Ms. Kristine Kay Dalere Project Advisers October 21‚ 2014 Phase 1 – Project proposal 1.1 Background of the study In 2004‚ Christian Palermo started a taxi company in Ecoville‚ Ayala. A business
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Introduction. Technical Feasibility. Operational Feasibility. Behavioral Feasibility. 9 4 System Analysis. a) Introduction. b) Entity Relationship Diagram. c) Data Flow Diagram. 11 5 System Design. a) b) c) d) Introduction. Database Normalization. Table Structure. Menu And Forms Design. Introduction. White Box Testing. Black Box Testing. GUI Testing. 17 6 Testing. a) b) c) d) 32 7 8 9 10 Conclusion. a) Strengths And Limitations Of Software. b) Future Enhancement. Hardware
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Functional Dependency Functional Dependency is the starting point for the process of normalization. Functional dependency exists when a relationship between two attributes allows you to uniquely determine the corresponding attribute’s value. If ‘X’ is known‚ and as a result you are able to uniquely identify ‘Y’‚ there is functional dependency. Combined with keys‚ normal forms are defined for relations. Examples Bear Number determines Student Name: BearNum ---> StuName Department Number
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Sales Report and Inventory System by Computer Science Students of San Sebastian College Recoletos Manila‚ 2nd Semester School Year 2010-2011 An Undergraduate Thesis Paper Presented to the School of Computer Studies San Sebastian College Recoletos Manila In Partial Fulfillment of the Requirements for the Degree of Science Major in Computer Science Dizon‚ Athea C. Miranda‚ John Paul G. Villanueva‚ Rochelle D. RECOMMENDATION FOR ORAL EXAMINATION This Case Study proposal‚ entitled
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CHAPTER 1 INTRODUCTION The proponents will discuss the summary on how the proponents came up with the ideas of making a Patient Information for Dr. Postres Dental Clinic using Java as a programming medium. We will state the problems that are considered in making this project and how we plan to solve it as an Information Technology Students of STI College – Global City. This chapter also states our objectives‚ scope and limitations of the proposed project. This project
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DBMS CONCEPTS 1. Database A database is a logically coherent collection of data with some inherent meaning‚ representing some aspect of real world and which is designed‚ built and populated with data for a specific purpose 2. DBMS It is a collection of programs that enables user to create and maintain a database. In other words it is general-purpose software that provides the users with the processes of defining‚ constructing and manipulating the database for various applications. 3. Database
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Fundamentals of Relational Database Design By Paul Litwin This paper was part of a presentation at a Microsoft TechEd conference in the mid-1990s. It was adapted from Microsoft Access 2 Developer’s Handbook‚ Sybex 1994‚ by Ken Getz‚ Paul Litwin and Greg Reddick. Reprinted with permission of the publisher. While the paper uses Microsoft Access (version 2) for the examples‚ the vast majority of the discussion applies to any database and holds up pretty well over 11 years after it was written. Overview
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Assignment 2- Database Modeling and Normalization Dr. Amir Afzal Strayer University- CIS 515 August 7‚ 2012 Abstract Selling high end electronics is big business and being a commissioned employee in that field if your sales are up means big money. Prices for electronics range from the low hundreds into the thousands. It really depends on the person style‚ specifications they are looking for‚ trust in the brand‚ and the depth of their pockets‚ how much a person is willing to spend for
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