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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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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1. Yes‚ the new system should be designed as a web based system because the president of the Personal Trainer‚ Inc wants members to have online access to their accounts and progress reports. Susan should consider some option such as internet based frameworks such as .NET or WebSphere. Web base systems are easily scalable‚ and can run on multiple hardware environments. User can logon to the system anytime any day. It would be 24/7. 2. In this case‚ the system requirement document should have
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Topology Diagram Topology Name Logical Characteristics Physical Characteristics Star Data passes through the hub to reach other devices on the network. Several devices having its own cable that connects to a central hub‚ or sometimes a switch‚ or even a Multi-station Access Unit (MAU). Data passes through the hub to reach other devices on the network. Ring Information is passed from one computer to another in either clock-wise direction or counter clock-wise direction and
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Response Essay #4 Technology in Context The readings from Bijker‚ Klinenberg‚ and Kimmelman collectively address the issue of storm water management within a variety of contexts: from its historical development to examples of successful strategies worldwide. Climate change is a global reality‚ and is prompting national responses to manage the severe weather it brings. Ultimately‚ the contexts affecting US water management strategy today have and will make the difference between the failures of
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Phenol‚ also known as carbolic acid‚ is an aromatic organic compound with the molecular formula C6H5OH. It is a white crystalline solid that is volatile. The molecule consists of a phenyl group (-C6H5) bonded to a hydroxyl group (-OH). It is mildly acidic‚ but requires careful handling due to its propensity to cause chemical burns. Phenol was first extracted from coal tar‚ but today is produced on a large scale (about 7 billion kg/year) from petroleum. It is an important industrial commodity as a
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Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation. A free-body diagram is a special example of the vector diagrams that were discussed in an earlier unit. These diagrams will be used throughout our study of physics. The size of the arrow in a free-body diagram reflects the magnitude of the force. The direction of the arrow shows the direction that the force is acting. Each force arrow in the diagram is labeled
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Research Design Content analysis is a process in which narrative data are divided into units of analysis to examine the contents of a particular body of material for the purpose of identifying patterns‚ themes or biases (Leedy and Ormrod‚ (2005). Further‚ qualitative content analysis has been defined in other ways such as: • “a research method for the subjective interpretation of the content of text or [narrative] data through the systematic classification process of coding and identifying
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Priscilla Avila HCIS/245 3/6/2015 Wk. 5 WORKFLOW DIAGRAM Dorothy has been experiencing constant headaches and fatigue. She decides it is time to visit her doctor‚ and she contacts her doctor’s office and schedules an appointment for the following day. 1. Dorothy calls her doctor’s office and requests a next day appointment. 2. That night the medical office computer verifies her insurance eligibility as well as for all the next day’s appointments. 3. When Dorothy arrives at her
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Executive Summary Executive Information Systems (EIS) are successfully providing computer support for senior executives in a growing number of organizations. As previous attempts to support senior executives failed‚ what was learned from these attempts‚ should be incorporated in future efforts. The role of EIS within an organization depends on the context. Various factors-among them‚ including political and cultural‚ can contribute to the deployment of EIS. With the aid of an interpretive framework
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