Exercise 1. Consider the following information about a university database: * Professors have an SSN‚ a name‚ an age‚ a rank‚ and a research specialty. * Projects have a project number‚ a sponsor name (e.g.‚ NSF)‚ a starting date‚ an ending date‚ and a budget. * Graduate students have an SSN‚ a name‚ an age‚ and a degree program (e.g.‚ M.S. or Ph.D.) * Each project is managed by one professor (known as the project’s principal inves- tigator). * Each project is worked
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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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3. Depreciation percentage=$1‚640‚200/$15‚411‚620 = 10.64% New Fixed Assets=$15‚411‚620 + $30‚000‚000 = $45‚411‚620 $45‚411‚620*.1064 = $4‚831‚796 new depreciation Pro forma Income Statement Sales ($36‚599‚300*1.12) $40‚991‚216 Cost of Goods Sold ($26‚669‚496*1.12) 29‚869‚836 Other Expenses ($4‚641‚000*1.12) 5‚197‚920 Depreciation 4‚831‚796 EBIT 1‚091‚664 Interest 573‚200 Taxable Income 518‚464 Taxes
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The 1950’s-60’s70’s-80’s Miranda Moultrie Nixon Back Again The United States presidential election of 1968 was the 46th quadrennial presidential election‚ held on Tuesday‚ November 5‚ 1968. Moon Shot On July 21‚ 1969‚ President Nixon spoke from the Oval Office to Apollo 11 astronauts Neil Armstrong and Edwin Aldrin at the Sea of Tranquility on the Moon. Apollo 11 was the spaceflight that landed the first humans on the Moon‚ Americans Neil Armstrong and Woodstock A village in New York state
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RUNNING HEAD: THE 1950’s AND 1960’s 1 The 1950’s and 1960’s Tracy Ladner Mississippi University for Women History 110 RUNNING HEAD: THE 1950’s AND 1960’s 2 The 1950’s and ‘60’s was a time of great growth and change for America. Some called it “The Golden Age” (Brinkley‚ 2012‚ p.779). For the most part there was prosperity and advances
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Laziness: A behavior that can cause problems in college Procrastinators meet… Tomorrow! This is a sentiment shared by procrastinators alike. To merely postpone doing something is not procrastination‚ rather‚ regularly practicing postponing‚ qualifies the behavior of procrastination. Idleness‚ slothfulness‚ lethargy‚ and indolence are all characteristics of the negative behaviors associated with the lazily behaving college student. Laziness negatively affects college students on a national
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