features. ERDs‚ depicting only structural features provide a static view of the system. 2 Class Diagrams 2.1 Elements of a class diagram: 2.1.1 class A class is a general concept (represented as a square box). A class defines the structural attributes and behavioural characteristics of that concept. Shown as a rectangle labeled with the class name. Class Name 2.1.2 association Class 1 Class 2 A (semantic) relationship between classes. A line that joins two classes. Food
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1) Entities (Strong ‚ Weak) with attributes 2) Attributes may be Single‚ Simple‚ composite or multi valued attributes 3) Relationships with cardinality ratios (1:1‚ 1:N‚ N: M) 4) Ternary relationship 5) In the case of EER diagram‚ concept of generalization‚ categorization and aggregation 4.2 Translation of EER diagram into a set of relations includes the translation of 1) Strong Entity 2) Weak Entity 3) Multi valued attributes 4) Unary relationship 5) Binary
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Brief Introduction to Database Concepts Andrea Rodr´ ıguez Summer School - Castell´n 2004 o Department of Computer Science University of Concepci´n‚ Chile o http://www.inf.udec.cl/∼andrea andrea@udec.cl 1 Introduction Information and data are different. Information is understood by a person. Data are values stored on a passive medium like a computer disk. The purpose of a database management system (DBMS) is to bridge the gap between information and data - the data stored in memory or on disk
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common product attributes. The common solution for this is to represent all products in a store in a catalog‚ either in a print format‚ or in case of online store‚ an electronic catalog. To simplify the catalog building process and customer browsing of a catalog‚ products are often classified into categories where similar products that share common attributes are in one broad category. An example would be footwear‚ where each product in this category shares some common attributes like size‚
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Snow Person (Attribute Charts) LESSON 4: The Storm (Where Topic Sentences) LESSON 5: The Storm (Top to Bottom Paragraph Frames) LESSON 6: The Storm (Writing Concluding Sentences) LESSON 7: The Storm (Revising for Precise Language) LESSON 8: The Playground (When Topic Sentences) LESSON 9: The Playground (Left to Right Paragraph Frames) LESSON 10: The Playground (Writing Concluding Sentences) LESSON 11: The Playground (Revising for Strong Verbs) LESSON 12: The Insect (Skill Review & Attribute Charts) LESSON
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Product Differentiation and Market Segmentation in Applesauce: Using a Choice Experiment to Assess the Value of Organic‚ Local‚ and Nutrition Attributes Jennifer S. James‚ Bradley J. Rickard‚ William J. Rossman Recently‚ there has been much interest among horticultural producers concerning the marketing of organic and locally produced food. A consumer survey was administered that asked respondents to choose an applesauce product from a list of products differentiated by price‚ and by labels that
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“identifying” attributes) contains at least k records. Recently‚ several authors have recognized that k-anonymity cannot prevent attribute disclosure. The notion of ‘-diversity has been proposed to address this; ‘-diversity requires that each equivalence class has at least ‘well-represented (in Section 2) values for each sensitive attribute. In this paper‚ we show that ‘-diversity has a number of limitations. In particular‚ it is neither necessary nor sufficient to prevent attribute disclosure. Motivated
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_________ relational type is the “relational ideal.” | 1:1 | M:1 | 1:M | M:N | Any attribute that is part of a key is known as a __________. | Key attribute | Key determiner | Logical attribute | Selector | The attribute B is _________ the attribute A if each value in column A determines one and only one value in column B. | Logically dependent on | Determined by | Owned by | Functionally dependent on | All primary key entries are unique‚ and no part of a primary key may be __________
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consumers. A technique‚ original developed in the early 60’s by Luce and Tukey (1964)‚ that could eventually be applied to answer that question‚ is conjoint analysis. In conjoint analysis products or services are defined on a limited number of relevant attributes or characteristics each with a limited number of levels. These products‚ called profiles‚ have to be evaluated by respondents‚ who have to rank or rate them (this section) or choose their most preferred ones from smaller choice sets (section 2.3)
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Hypothesis: The hypothesis that we have developed after the initial research is based on focus groups and small scale survey are: Ho: Comparative advertising is a positive way of promotion and is recommended H1: Comparative advertising is a negative way of promotion and isn’t recommended Methodology Qualitative and Quantities research: The type of research that will be used in this study is qualitative research and quantitative research. Qualitative researchers aim to gather an in-depth understanding
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