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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Organism Physiology Paper Deborah Chase Biology 101 Professor Y. Henry March 9‚ 2015 Organism Physiology Paper (Chimpanzees) Chimpanzees are hominid species of apes native to Africa and the closest related to humans which they share 95-98% of human DNA. Earlier research reports that the oldest known primates are about 65 million years old with the chimpanzees emerging about 20 million years ago. It is thought that the chimpanzee’s level of intelligence has allowed it to survive
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Biodegradable Waste Bio-waste is defined as biodegradable garden and park waste‚ food and kitchen waste from households‚ restaurants‚ caterers and retail premises‚ and comparable waste from food processing plants. It does not include forestry or agricultural residues‚ manure‚ sewage sludge‚ or other biodegradable waste such as natural textiles‚ paper or processed wood. It also excludes those by-products of food production that never become waste. Currently the main environmental threat from
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Lu Feng BIO 182 Hillary Emick Plant Adaptation Pinus halepensis‚ commonly known as the Aleppo Pine‚ is a pine native to the Mediterranean region. In dessert‚ water is limited for plants to grow up. Pinus halepensis has plans for water management. The leaves are very slender‚ 6–12 cm (2.4–4.7 in) long‚ distinctly yellowish green and produced in pairs (rarely a few in threes).1 The needle-shaped leaves exposed area minimizes the amount of moisture lost to breezes and the sunlight. The needle-shaped
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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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I BIOS (BASIC INPUT OUTPUT SYSTEM) BIOS is an acronym for Basic Input Output System. It is the program that stores configuration details about your computer hardware and enables your computer to boot up. Every time your computer is switched on the BIOS loads configuration data into main memory‚ performs a routine diagnostic test on your hardware‚ then loads the operating system. Every computer has BIOS. There are many types but the most common type of BIOS ’s come from: AMI‚ Award and Phoenix
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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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Russia had enough chemical weapons to wipeout most animal and plant life on earth. Biological weapons were deployed in various ways to gain strategic or tactical advantage over an advisory. The United States developed an anti-crop capability that used bio-herbicides or myco-herbicides to destroy enemy agriculture. Fisheries and water-based vegetation was also targeted. Wheat blast and rice blast were weaoponized in aerial tanks and cluster bombs to deliver to enemy water sheds. Even though herbicides
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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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Title: studying organisms in an ecological habitat Aim: to determine the feeding relationships in an ecological habitat Method: * Explore ecological habitat * Make notes of features of selected habitat * Measure the seize of the area to be explored * Record the name of all organisms found in the habitat * Make note of any special features of the organisms * Note the presence of any symbiotic relations Observations and results: Tabulation of the organisms in habitat
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