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Multivalued Dependency Prof. Sin-Min Lee Department of Computer Science Multivalued Dependencies The multivalued dependency X Y holds in a relation R if whenever we ...
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John enjoys Music. Jogging. Mary enjoys Reading. Tennis. Cycling. Jenny enjoys Music. STUDENT ... customer-name customer-street customer-city ...
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A drinker's phones are independent of the beers they like. ... A drinker can have several phones, with the number divided between areaCode and ...
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A multivalued dependency (MVD) on R, X - - Y , says that if ... If A- - B and B- - C, then A- - C. Obvious from the complementation rule if the Schema is ABC. ...
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... R is in 4NF if: whenever X - - Y is a nontrivial MVD, then X is a superkey. Nontrivial MVD means that: Y is not a subset of X, and ...
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Multivalued Dependency Tamer Abuelata Introduction Goal in Databases: BCNF (Boyce Codd Normal Form) Losslessness Dependency preservation Remember
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A drinker's phones are independent of the beers they like. ... A drinker can have several phones, with the number divided between areaCode and ...
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course. dept. student. Two students in the same department take the same courses. pattern ... first two relations ((student, course), (course, lecturer)) would ...
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This is the case for the checkbox. What IDEs do you use? BR ... What IDEs do you use? BR BR input type=checkbox name=ide value=NB NetBeans ...
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Problems of first design. Redundancy, potential inconsistency. Insertion Anomalies ... A key is a set of attributes where: If keys match, then the tuples match ...
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in (408) 555-9999 and (812)-555-1111, you can't swap area codes ... Consider phone has been split into area code and number and adding manf giving ...
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For each address, we must repeat the loan numbers for a customer, and vice versa. ... is a table with the schema (name, address, car), as shown in Figure 2. ...
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A multi-valued clause is a logical disjunction of one or more MV literals. A formula in multi-valued conjunctive normal form (MV-CNF) is the logical ...
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26-28 Apr. 2006. A. Morg l GAP'2006, Sanliurfa, TURKEY. 1. OPTIMIZATION OF CURRENT MODE MULTIVALUED LOGIC CIRCUITS. Avni MORG L and Fatma SARICA ...
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In one-valued mapping case we have: Definition 1. A mapping is called ... of the Latvian Academy of Sciences, Section B, v.52, 259-262, 1998. 12. Thank You! ...
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Section Emp='e1' Project='j1'/ /Dept Dept Section Emp='e3' Project='j2'/ /Dept ... Emp. v8 'e3' A. Project 'j2' v10. Basic Definitions ...
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Visualizing Multivalued Data from 2D Incompressible Flows Using Concepts from Painting R. M. Kirby H. Marmanis D. H. Laidlaw Brown University
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Functional Dependencies Decompositions Normal Forms: BCNF, Third Normal Form Introduction to Multivalued Dependencies
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A Framework for the Perceptual Optimization of Multivalued Multilayered 2D Scientific Visualization
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CS 728 Advanced Database Systems Chapter 14 Database Design Theory: Introduction to Normalization Using Functional & Multivalued Dependencies
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Attribute whose value may be calculated (derived) from other attributes ... Multivalued Attributes in ERMs and ERDs. A Multivalued Attribute in an Entity: ...
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If an attribute depends on only part of a multivalued key, remove it to a separate table. ... Remove repeating groups. 1st Normal Form ... Remove Repeating Groups ...
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Traversing structures. Navigation through the data structure is specified using the dot notation: ... Traversing multivalued elements. Associate a variable to ...
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Every attribute value is atomic (not multivalued, not composite) ... Combined, these are a composite primary key (uniquely identifies the order line) ...
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Realizes every non-symmetric function by repeating variables ... beard. red eyes. Perkowski. Jeske. Zakrevskij. Al-Rabadi. Multivalued variables ...
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One More Normal Form Consider the dependencies: Product Company Company, State Product Is it in BCNF? Multivalued Dependencies (and one last normal form ...
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Missing a good code for moving object from location A to B. Participant Object ... Object Detail - IETF CAM area for extensions. Multivalued list of ' ...
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Process modeling focuses on the flow of data. Where does it come ... Basic ERD Symbology. Entity. Relationship. Attribute. Multivalued. Attribute. Associative ...
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Array and Multiset Types in SQL. Object Identity and ... Remove awkwardness of flat-books by assuming that the following multivalued dependencies hold: ...
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Multivalued Dependencies and Fourth Normal Form. Overall Database Design Process ... E.g. If A B and B C, then we can infer that A C ...
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Multi-valued Dependencies and Fourth Normal Form COSC 6340 Topics Covered Definition of Multivalued Dependencies Reasoning about MVDs Fourth Normal Form Motivation ...
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... example, a telephone number attribute for a person may be multivalued as people ... A derived attribute is an attribute whose value is calculated from other ...
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Diagram a composite attribute by showing the connections from the parent to the children. ... Multivalued Attribute as a Relationship ...
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E.g. multivalued attribute: phone-numbers. Derived attributes ... an entity set is a set of one or more attributes whose values uniquely determine ...
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Creation of Complex Values and Objects ... Remove awkwardness of flat-doc by assuming that the following multivalued dependencies hold: ...
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ECE 568 SWITCHING THEORY Catalog Data: Switching circuits,(Lct:4) Cr.4 Pre req: ECE 468 Threshold symmetric functions, and iterative networks. Multivalued and fuzzy ...
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to Relational Tables. Basic Conversion Rules. Represent each multivalued attribute as an object. ... of the correct subtype tables can be searched for ...
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Traditional database applications in data processing had ... Remove awkwardness of flat-books by assuming that the following multivalued dependencies hold: ...
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Array and Multiset Types in SQL. Object Identity and ... Remove awkwardness of flat-books by assuming that the following multivalued dependencies hold: ...
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We all have been using ER-Diagram for a long time and are aware of its basic parts. Let's have a look at the elements and pros and cons of the ER-Diagram.
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Definition: ... on any relation state r of R: If two tuples t1 and t2 exist in r such that ... 1. Set D := { R }; 2. While there is a relation schema Q in D ...
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To reach the limits of a good SQL Database Tester, one should have a profound knowledge of the SQL basics.
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Beyond Fourth Normal Form - The Voyage to Utopia ... Capturing the Effects of Time. Defining and Describing Attribute Domains. Domain Restrictions ... THE KEY ...
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ER ER-to-Relational Mapping Algorithm
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B HI. CG H} Some members of D : A CGHI. ... rule is satisfied with being B, being HI, being CG, and being H. We conclude that B H. ...
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Primary Key: a minimal set of attributes that form a candidate key ... A key consisting of more than one attribute is called a 'composite key.' Good Primary Keys ...
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B HI. CG H} Some members of D : A CGHI. ... rule is satisfied with being B, being HI, being CG, and being H. We conclude that B H. ...
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CS 728 Advanced Database Systems Chapter 15 Database Design Theory: Normalization Algorithms Chapter Outline 0. Designing a Set of Relations 1. Properties of ...
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Database Design: Normalization Chapter 5, Pratt & Adamski Functional Dependence An attribute A is functionally dependent on attribute(s) B if: given a value b for B ...
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Which are Spatial Data? Names email address NASA satellites imagery Weather and Climate Data SSN Medical Imaging NASA satellites imagery - terabytes of data per day
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redundancy causes problems with storage and data retrieval. efficient ... get rid of the repeating ... Source: Rob and Coronel, 2000) 8. 1st Normal Form ...
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Converting an E-R diagram to a table format is the basis for deriving a ... Form a table for each lower level entity set, include primary key of higher ...
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Title: Chapter 5 Created Date: 9/27/2002 11:29:22 PM Document presentation format: On-screen Show (4:3) Other titles: Times New Roman Arial Default Design 1_Default ...
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nur 473 lecture 2 enivronmental health
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Database Systems: Design, Implementation, and Management Tenth Edition Chapter 4 Entity Relationship (ER) Modeling * Database Systems, 10th Edition * Developing an ER ...
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Chapter 2: Relational Model I Structure of Relational Databases Convert a ER Design to a Relational Database
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