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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The independent woman. Independence in women has got to be one of the greatest jumps in the history of television. For years in the entertainment industry women have been represented as a subservient service to the husband and children‚ incapable of doing anything great with themselves other then fulfilling their duties as a housewife and mother. Today‚ they are known to be capable of anything. Whether it is being a single mother‚ to being able to provide for herself‚ in pursuit of her dreams
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TWO-VARIABLE INEQUALITY MAT 221 Joseph Oslakovic February 16‚ 2014 TWO-VARIABLE INEQUALITY This week we are learning about two-variable inequalities as they pertain to algebraic expressions. The inequality can be graphed to show the values included in and excluded from a given range of numbers. Solving for inequalities such as these is a critical skill in many trades which can save or cost a company a lot of time and money. Ozark Furniture Company can obtain at
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Professor Hilton Assignment: Research Paper 11-30-10 Independent Living Foster care is supervised care for delinquent or neglected children usually in an institution or substitute home. When a youth turns eighteen‚ he/she “ages out” of foster care. Once that happens‚ the youth now transitions from foster care to an Independent Living Program. The Independent Living Program is vitally important for the youth because it provides them with the necessary
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Contents ERD (Entity Relation Diagram) 2 2.1 History of ERD 2 2.2 Building Blocks 2 2.2.2 Relationship 2 2.3. Diagramming Conventions 3 MS ACESS TABLE 5 3.1 Parts of Table 6 3.2 Creating Tables in Access 6 Chapter No 2 ERD (Entity Relation Diagram) 2.1 History of ERD An entity-relationship model (ERM) is an abstract and conceptual representation of data. Entity-relationship modeling is a database modeling method‚ used to produce a type of conceptual schema or semantic data
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Subject: Independent journalists vs. government censorship in internet age At the beginning of this year‚ the journalists from the newspaper Southern Weekly – a liberal Chinese newspaper- stood up to the government’s censorship. It appears that Chinese authorities cannot neglect people’s desire for the truth any longer since the awakened citizen will lean against draconian censorship. As social media1) explodes and online-based small media emerges‚ we have tremendous channels to access news and
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2-Variable Inequality Here is an example of a problem very similar to the one in the Week Three Assignment: Catskills Hammock Company can obtain at most 2000 yards of striped canvas for making its full size and chair size hammocks. A full size hammock requires 10 yards of canvas and the chair size requires 5 yards of canvas. Write an inequality that limits the number of striped hammocks of each type which can be made. (b) First I must define what variables I will be using in my inequality
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2011/10/07 11:57 AM Page 115 6 Independent learning CATHERINE EARL As Chapter 5 has shown‚ student success at university is pegged on a rapid adjustment to the university environment and culture which‚ unlike school‚ involves a new style of learning. Independent learning is an umbrella term covering all aspects of university learning from undertaking individual reading and research‚ attending lectures and tutorials to accepting responsibility for a workload. Independent learning was described‚ in
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iINDEPENDENT BEHAVIOUR (12 MARK ESSAY) Some reasons people show signs of independent behaviour (i.e. do not conform or obey) is influence by many factors‚ Gender being one of them. Neto carried out the same study as Asch‚ but this time all the participants were female (as in Asch’s study they were all male). In Asch’s study he found that 37% of the participants conformed‚ whereas Neto found that 59% conformed. However Asch’s study was criticized for lacking ecological validity and Neto’s study
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Photosynthesis Essay During the Light Dependent Reactions‚ activity occurs within the thylakoids of the chloroplast. NADP+ accepts two high energy electrons and an H+ ion and then converts into NADPH. This process ultimately traps some of the sunlight in chemical form. Then‚ NADPH is able to carry the energy it absorbs to the rest of the cell. The reaction produces O2 gas and converts ADP to ATP and NADP+ to NADPH. First‚ pigments in Photosystem II absorb light‚ which is then absorbed by electrons
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