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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COMPARATIVE EVALUATION OF POLYMER AND CERAMIC BURS IN SELECTIVE CARIOUS DENTIN REMOVAL Aim: The aim of the study was to evaluate and compare theclinical efficacy and patient perception of steel bur‚ polymer and ceramic bur in caries excavation. Study design 40 children in the age group of 8-14 years with at least three occlusal carious lesions in any of the maxillary/mandibular first permanent molars were included in this study. The selected carious first permanent molar teeth in each patient were
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A New “Joe” on the Block 1. What are the top three key decisions faced by Joe? a. Joe has to decide the best location for his coffee shop b. Joe needs the understanding of what makes a coffee shop popular c. Joe needs to know the coffee consumption pattern in United States. 2. What are the deliverables that an outside researcher should produce to help Joe with the Key decision? An outside research deliverables should be able to provide information either through exploration or descriptive research
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Properties of Light Purpose: The ideal purpose of this lab activity is to investigate the relationship between the frequency of the light (color) and the energy produced by different colors of light. Other purposes of this experiment include calculating the proper current for each LED‚ measuring the evaporation rate of rubbing alcohol‚ and being able to discuss the outcome of the relationship in light energy and the color of the light producing the energy. Materials: Light Emitting Diodes (red
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For alternate meanings see skin (disambiguation) Diagram of the layers of human skinIn zootomy and dermatology‚ skin is an organ of the integumentary system composed of a layer of tissues that protect underlying muscles and organs. As the interface with the surroundings‚ it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation‚ sensation and vitamin D and B synthesis. Skin has pigmentation‚ provided by melanocytes
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consists of polyhydroxyalkanoate‚ which contain two monomers 3-hydroxybutyrate and 3-hydroxyvalerate. Bacteria growing in tanks with a carbon-based food source in which the polymer is then isolated and purified presently produce the polymer industrially. Biotechnology has been recently used to economically attempt produce the polymer using genetic engineering technique. The advantages of this process are faster growth‚ better yields‚ easier recovery‚ and production of less extra waste biomass and cheaper
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ASSIGNMENT # 02 SUBMISSION DATE JANUARY 22‚ 2013 COURSE TEACHER DR. KHAYER JAHAN SOGRA ASSIGNMENT SUBMITTED BY: 1. Rizwana Ferdousi ID B11020 01 2. Md. Rabius Sunny ID B11020 12 3. Sadman Ariq ID B11020 13 A New “Joe” on the Block 1. What are the top three key decisions faced by Joe? The three top decisions faced by Joe are: a. Joe has to decide the best location for his coffee shop b. He needs to understand what
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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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1 AUTOMATIC STREET LIGHTING CONTROL SYSTEM WITH FAULT CURRENT ANALYSIS NOR HAFIZAH BT CHE HASSAN This Report Is Submitted In Partial Fulfillment of Requirements For The Bachelor of Electrical Engineering (Industrial Power) Faculty of Electrical Engineering Universiti Teknikal Malaysia Melaka (UTeM) MAY 2008 2 Specially dedicated to my family….. In memories‚ my late Father‚ Allahyarham Che Hassan bin Che Soh Dearest Mother‚ Rafeah Yusoh‚ Brother‚ Mohd Al Hafiz bin Che
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ISSN (Print) : 2320 – 9798 ISSN (Online): 2320 – 9801 International Journal of Innovative Research in Computer and Communication Engineering Vol. 1‚ Issue 2‚ April 2013 New Epoch of Wireless Communication: Light Fidelity Megha Goyal1‚ Dimple Saproo2‚ Asha Bhagashra3 Assistant Professor‚ Dept. of ECE‚ Dronacharya College of Engineering‚ Gurgaon‚ India1 Associate Professor‚ Dept. of ECE‚ Dronacharya College of Engineering‚ Gurgaon‚ India2 M.Tech Student‚ Dept. of ECE‚ Shekhawati Engineering
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