Entity-Relationship (E/R) Model Dr P Sreenivasa Kumar Professor CS&E Dept I I T Madras Entity-Relationship (E/R) Model Widely used conceptual level data model • proposed by Peter P Chen in 1970s Data model to describe the database system at the requirements collection stage • high level description. • easy to understand for the enterprise managers. • rigorous enough to be used for system building. Concepts available in the model • entities and attributes of entities. • relationships between
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Emulsifiers What does an emulsifier do? Emulsions in food are mixtures of oil and water. These normally do not mix and will separate if left without an emulsifier. Emulsifiers are among the most frequently used types of food additives. They are used for many reasons. Emulsifiers can help to make a food appealing. The example of the mayonnaise without the emulsifier shows how unappealing it would be if the oil and water separated before it was used. Emulsifiers have a big effect on the structure
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Taiwan‚ creating a magnificent masterpiece of architecture and engineering – Taipei 101. It is also known as Taipei Financial Centre‚ consisting of a high rise tower with usable 101 floors above ground and 5 floors underground and rest on 30‚277m2 land.[1] (Binder‚ G. pg 27) The whole commercial tower also consists of adjoined multi-level shopping complex with fashion outlet stores‚ restaurants and clubs. Taipei 101 is a traditional building concept which has been given modern construction techniques
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Biology Project Autumn Brown 3rd block Mrs. Stephens More than 2‚000 years ago‚ Aristotle began grouping plants and animals into various categories. Although he did not consider the idea that different organisms were related by descent‚ he devised a system that placed these organisms in a hierarchy. Through classification systems‚ scientist have found it easier to find answers to important questions. This way
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#1. Entity Relationship Diagram #2. a. & b. One Room can be designated only one Room Type‚ whilst a particular Room Type can be assigned to several rooms (i.e. there may be many rooms that have double beds). Therefore‚ Room has a one-to-one relationship with RoomType and RoomType has a one-to-many relationship with Room. From the table‚ it can be seen that a particular room can only be designated as belonging to one type / category‚ thus confirming that Room RoomType has
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IB Home Standard Level Higher Level Options Additional Resources 8.2 Photosynthesis 8.2.1 Draw and label a diagram showing the structure of a chloroplast as seen in an electron micrograph 2D Representation 3D Representation Electron Micrograph 8.2.2 State that photosynthesis consists of the light-dependent and light-independent reactions Photosynthesis is a two-step process: 1. The light dependent reactions convert the light energy into chemical energy 2. The light
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Amber Pruitt EN097 9/21/11 101 Dalmatians My favorite film is 101 Dalmatians‚ it portrays a strong example of the traditional relationship of dog and owner‚ has a mixture of drama‚ romance‚ and humor‚ also it is very indulging to those who are dog lovers. This particular film is very interesting and eye catching. It will have you on the edge of your seat and crying all at once. The bond each character has with his or her dog is very heartwarming‚ and really touchy. The importance of this
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Room 101 When I was thinking about what I would banish to room 101 if given the choice millions of my pet peeves came to my head. But instead of going on an infinite rant about everything I hate about‚ I chose the four things which I would voluntarily go in Room 101 myself rather than having to put up with them any longer Before anything else I would nominate to go in room 10I would put in Cigarette smokers‚ is there anything more irritating than somebody smoking next to you? You’re standing at
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With the very few assignments left to do as I wrap up my spring term‚ J 101 has taught more things than any other class and completely changed the way I view English grammar now. At the beginning of the term‚ I believed I was decent at grammar and had a good understanding of most of the rules and how they played into the English language. Before J 101‚ I had this misconception that whatever sounds good or appears to sound fluid is seemingly always correct. Although much of a sentence has to do with
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As a graphic design major‚ many people may think that drawing is not a beneficial addition to my skill set considering that most of the work I do will be based in digital media‚ but there are particular aspects I have learned in Drawing 101 that are important factors to consider when dealing with graphic design. In this industry‚ it is crucial to be able to construct layouts and designs that are visually engaging and pleasing‚ and graphic designers are required to understand how to convey information
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