Entity Relationship Diagram The bellow diagram is what is refered to as an "Entity Relationship Diagram". Its purpose is to show the relationship between different data in the hotel management program ‚ and the actions that are performed on it. And how data from different objects relate to each other. Legend The Data Entities represent data that will need to be stored on the system‚ in general terms. The Relationships represent actions that will occur to the Data Entities‚ or Weak Entities.
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1. What is an Entity Relationship Diagram? An entity relationship diagram is a graphical representation of an organisation’s data storage requirements. Entity relationship diagrams are abstractions of the real world which simplify the problem to be solved while retaining its essential features. Entity relationship diagrams are used to: identify the data that must be captured‚ stored and retrieved in order to support the business activities performed by an organisation; and identify the data required
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emphasized by Kaoru Ishikawa‚ a professor of engineering at Tokyo University and the father of “quality circles.” Start your quality journey by mastering these tools‚ and you ’ll have a name for them too: "indispensable." 1. Cause-and-effect diagram (also called Ishikawa or fishbone chart): Identifies many possible causes for an effect or problem and sorts ideas into useful categories. 2. Check sheet: A structured‚ prepared form for collecting and analyzing data; a generic tool that can be
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The Entity Relationship Diagram (ERD) depicts a conceptual data model that incorporates some of the important scientific information about the real world. It adopts a natural view that the real world consists of entities and relations (Chen‚ 1976). One objective of the ERD is to create a simple‚ easy to understand and conveniently presented data model consisting of entities‚ attributes‚ relationships and cardinalities. The model serves as tool for database design‚ where the model can facilitate communication
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IT220 COURSE PROJECT You and your fellow team members are employees of a consulting firm called “Network Solutions”. Your firm’s responsibilities include determining the following: • What type of network would best suit each particular customer (e.g.‚ peer-to-peer or client/server)? • Does the customer need a LAN and/or a WAN? • What type of network topology will best suit the customer? • Which cabling media will meet the customer’s needs now and in the near future? • Brands of hardware
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The story The Circuit by Francisco Jimenez is a story about a boy named Panchito and his family. In the story‚ the family faces many challenges for example they have trouble finding work‚ they don’t have a lot of money‚ and for the last example they can’t go to school because of work. In this open ended you will find out how this family deals with their problems‚ individually and together. The first problem the reader was introduced to was housing‚ the family moves for work and can’t buy a new house
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Food Web Diagram Snake (D) Hawk (D) Coyote (D) Insects (C) Scorpion (C) Lizard (C) Quail (C) Mouse (C) Cactus (P) Grass (P) When you are explaining an ecosystem you have producers‚ consumers‚ and decomposers. Producers are the plants and the tress in the ecosystem that provide the energy to the ecosystem. As for the desert the producers are cactus and grass. The consumers of the ecosystem are in three different kinds‚ they are herbivores‚ carnivores‚ and omnivores. Herbivores are the consumers
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Similarities and Differences Comparing is the process of identifying similarities and differences between ideas or things. A variety of strategies can be used when designing comparison activities. We will discuss sentence stems‚ Venn diagrams‚ double bubble diagrams and comparison matrices. Sentence Stem Comparisons This strategy can be used to have the students compare and contrast people‚ characters‚ places‚ events‚ concepts or processes. The comparisons can be general or specific. Marzano’s
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PHY 156 4870 Lab Report #6: RC Circuits October 14th‚ 2011 Objectives: The purpose of this lab is to observe the charge and discharge curves of a capacitor and determine its time constant. The capacitor is observed with respect to the voltage traveling through the capacitor. Principles: One of the main principles of this experiment is defined by V = VB [1 – exp (-t/RC)] for a charging capacitor and furthermore‚ τ is defined by resistance multiplied by capacitance(R * C). Thus
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lesson using Venn diagrams. Venn diagrams are an example of a graphic organizer and Venn diagrams are great tools for comparing and contrasting because they provide a quick way to see the similarities and differences of the topics. A learning objective for second grade students is to compare and contrast works by different authors in the same genre or regarding the same thing. (Perma-Bound) One way I can introduce the Venn diagram to my students is by drawing a large diagram on the board in
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