are working on their degree. * Each graduate student has another‚ more senior graduate student (known as a student advisor) who advises him or her on what courses to take. * Design and draw an ER diagram that captures the information about the university. Use only the basic ER model here; that is‚ entities‚ relationships‚ and attributes. Be sure to indicate any key and participation constraints. Exercise 2. Notown Records has decided to store information about musicians who perform
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Entity Relationship Diagram - ERD Database – is a large data repository that stores a shared collection of logically data. A database can be modeled as: A collection of entities and relationship among entities. What is Entity Relationship Diagram? An entity-relationship (ER) diagram is a specialized graphic diagram that illustrates the relationships between entities in a database‚ simply it illustrates the logical structure of databases. ER diagrams often use symbols to represent different types
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Exercise 1 1. Draw an E-R diagram for each of the following situations (if you believe that you need to make additional assumptions‚ clearly state them for each situation): a. A hospital has a large number of registered physicians. Attributes of PHYSICIAN include Physician_ID (the identifier) and Specialty. Patients are admitted to the hospital by physicians. Attributes of PATIENT include Patient__ID (the identifier) and Patient_Name. Any patient who is admitted must have exactly one admitting
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New Er Digram for BIOIn software engineering‚ an entity–relationship model (ER model) is a data model for describing the data or information aspects of a business domain or its process requirements‚ in an abstract way that lends itself to ultimately being implemented in a database such as a relational database. The main components of ER models are entities (things) and the relationships that can exist among them. Entity-relationship modeling was developed by Peter Chen and published in a 1976 paper
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National banking & delivery systems along with cultural & training challenges were evaluated too. Based on Iran governmental services constraints‚ we presented an appropriate architecture for large scale online shopping systems. Some of design phase diagrams are presented that could be useful for software developing companies. Index Terms—B2C‚ Electronic Commerce‚ Online Shopping System‚ SDLC Phases. I. INTRODUCTION As electronic services are dependent on many governmental and private organizations
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assumptions in a Credit Card Sale System are: 1. The Customer and the Retailer have an account in the same bank. 2. Instead of the grid through which all the banks are connected the payment is processed by the bank for simplicity. E-R Diagram Tables and Primary Keys Normalization Forms The three normalization forms are 1. First normal form 2. Second normal form 3. Third normal form First normal form First normal form states that there should be no repeating elements
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[pic] Factors Contributing to Project Success According to Standish Report: 1. Executive Management Support 2. User involvement 3. Experienced Project Manager 4. Clear Business Objectives 5. Minimized Scope 6. Standard software Infrastructure 7. Firm Basic Requirements 8. Formal Methodology 9. Reliable Estimates 10. Other The cost of incorrect‚ misunderstood‚ and not agreed upon requirements affects the customers and developers in terms of time‚ money‚ and lost opportunities. Applying
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completed a college inventory report (CSI)‚ something many college students fill out each year. Out of all the topics of my college inventory report I can say that I agree with results of my low sociability and my desire to finish college. I am a shy person and have tendency to hide away from crowds. After being around people for what I consider a long period of time I get uncomfortable. I feel like the odd one so I just hope to be unnoticed by being quiet. My desire to finish college is just something
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Bulacan State University Bustos Campus Bustos‚ Bulacan WRITTEN REPORT in SOCIAL PHILOSOPHY (ETHICAL RELATIVISM) Submitted by GROUP 1 BSED-3H Submitted to Mr. Cruz ETHICAL RELATIVISM Ethical relativism is the position that there are no moral absolutes‚ no moral right and wrongs. Instead‚ right and wrong are based on social norms. Such could be the case with "situational ethics‚" which is a category of ethical relativism. At any
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Entity Relationship (ER) Modeling In this chapter‚ you will learn: ½ The main characteristics of entity relationship components ½ How relationships between entities are defined‚ refined‚ and incorporated into the database design process ½ How ERD components affect database design and implementation ½ That real-world database design often requires the reconciliation of conflicting goals 4 This chapter expands coverage of the data-modeling aspect of database design. Data modeling is the first
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