E-R Diagram Introduction:- In 1976 ‚Chen developed the Entity-Relationship Diagrams ‚a high-level data model that is useful in developing a conceptual design for database . An ER diagram is a diagram containing entities or “items”‚ relationships among them‚ and attributes of the entities . The E-R model is one of the best known tools for logical database design. Within the database community‚ it is considered a natural and easy-to-understand way of conceptualizing the structure of database.
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Economics: Demand Analysis Demand Demand is the quantity of good and services that customers are willing and able purchase during a specified period under a given set of economic conditions. The period here could be an hour‚ a day‚ a month‚ or a year. The conditions to be considered include the price of good‚ consumer’s income‚ the price of the related goods‚ consumer’s preferences‚ advertising expenditures and so on. The amount of the product that the costumers are willing to by‚ or the demand‚ depends
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1. award: 1.50 out of 2.50 points The demand curve for product X is given by QXd = 500 - 5PX. a. Find the inverse demand curve. PX = 100 - 0.2 QXd Instructions: Round your answer to the nearest penny (2 decimal places). b. How much consumer surplus do consumers receive when Px = $45? $91.00 c. How much consumer surplus do consumers receive when Px = $25? $95.00 d. In general‚ what happens to the level of consumer surplus as the price of a good falls? The level of consumer surplus
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Academic Calendar Shift: “Here we go! Paradigm Shift!” Over the past two years‚ the Philippines‚ though still quite behind compared to other countries‚ has achieved major changes to the systems it envelops. One such change was the implementation of the long awaited Enhanced Basic Education Act of 2013‚ or simply the K-12 educational system. This said system brought about new opportunities for the Filipino people as well as taking the country a step closer to a better economic status.
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Figure 1.0: Entity Relationship Diagram of Generic Academic Performance Monitoring System Figure 2.0: Context Diagram of Generic Academic Performance Monitoring System The figure 2.0 represents the two (2) users of the Generic Academic Performance Monitoring System namely the Administrator and the Professor. The Administrator entity shows the capability to access the system; manage account by modifying account’s profile; managing member’s account such as creating new user profile and updating
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Circular Flow Diagrams Introduction Money flows into and out of the economy. The circular flow diagram explains how money moves through the economic system involving households‚ businesses‚ the government‚ and foreign agents (Editorial Board‚ 2011). Circular flow diagrams are visual models that show firms who employ workers‚ the workers then spend on goods produced by firms‚ and the money is then used to compensate the worker and buy raw materials to make the goods and the circle continues.
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mywbut.com Data Flow Diagrams (DFDs) 1 mywbut.com Specific Instructional Objectives At the end of this lesson the student will be able to: • • • Identify the activities carried out during the structured analysis phase. Explain what a DFD is. Explain why constructing DFDs are important in arriving at a good software design. • Explain what a data dictionary is. • Explain the importance of data dictionary. • Identify whether a DFD is balanced. Structured Analysis Structured analysis
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firmcan afford and the economy is allocating its resources the best way possible. POINTS ON THE PRODUCTION POSSIBILITY CURVE. The line connecting Points A and B is the productivity curve which separates the attainable from the unattainable. Points along the curve are said to be efficient and are the best possible combinations of resources to enable full utilization and to ensure that the country is at a full employment. All the points shown above on the production possibility curve (PPC)have an indication
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Food Web Diagram Sci/230 November‚ 2013 Desert Biome Food Web Diagram Food Web Diagram An ecosystem can be defined as a more or less self-contained function unit in ecology consisting of all abiotic and biotic
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Week 1-Discussion 1-Circular Flow Diagram To first explain how the circular flow diagram relates to the current economic situation‚ one must realize that the two‚ three‚ and four sector models no longer apply to the United States any more. Only the five sector model currently applies. The five sector model of the circular flow of income is a more realistic representation of the economy and has a more definitive look as to what and how economics really is in the world. In the more simplistic two
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