Entity-Relationship Diagrams (ERD) Data models are tools used in analysis to describe the data requirements and assumptions in the system from a top-down perspective. They also set the stage for the design of databases later on in the SDLC. There are three basic elements in ER models: Entities are the "things" about which we seek information. Attributes are the data we collect about the entities. Relationships provide the structure needed to draw information from multiple entities. Generally
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Component Diagram Notations The component diagram’s main purpose is to show the structural relationships between the components of a system. In addition‚ component diagrams are useful communication tools for various groups. In creating a component diagram‚ there are different notations that can be used to show the different relationship of each component within the system. The component diagram notation set now makes it one of the easiest UML diagrams to draw: * COMPONENT A component can
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follow in order to remain active. Security Web Security Guard is an application developed by Crawler that prevents the user from entering potentially dangerous Web sites that may cause adware‚ viruses‚ spyware‚ or spam.Web Security Guard informs of potentially dangerous websites by displaying information and user reviews before entering websites.It uses a database of web site ratings and reviews provided by the users. Crawler Toolbar comes with Web Security Guard keeping it up to date and providing
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Lost legacies- The Desert of Fire Prologue- Lightning was fast asleep in his dirt and rock den when a deep rumbling woke him up. He hopped on his paws immediately and dashed to the entrance‚ listening to the earth as it shook in obvious discomfort. He looked up and saw rocks falling from a nearby cave onto several rattlesnakes and fear flashed through his mind. He leapt back into the burrow and shook his son Willow awake. He hissed urgently to his son “Get up Willow! Come on!” Willow suddenly
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Desert Island Story The boat went clash as we collided with huge rocks. The boat was sinking‚ it was too late‚ and we had sunk. I was swimming as fast as I could. I managed to grab on to a bit of drift wood. There wasn’t anyone there as far as I could see. I caught a glimpse of sun reflecting into my eye. I spotted Robbie at the other side of me and he seemed to be drowning. He then grabbed a bit of drift wood and we both ended up on a desert island. Robbie feared he would not get back. Then a
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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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The web‚ by Anna Lee Walters Questions Understanding 1. Who are the main characters? Hilda and Edith her former employer. 2. Where and when does this story take place do you think? In Hildas house at night and Edith’s café in the past. 3. Describe the setting of the story. It starts with the spiders spinning webs all over Hildas house both inside and out‚ but in reality the webs are symbolic to how Hilda feels Edith has behaved towards Hilda and every else around Edith. 4.
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The Iron-Carbon Diagram There are two iron-carbon equilibrium diagrams: - stable iron-graphite Fe-Gr - metastable iron-cementite Fe-Fe3C The stable condition usually takes a very long time to develop. The metastable diagram is of more interest. Fe3C iron carbide called cementite because it is hard. Following phases exist on Fe-Fe3C diagram: - liquid solution of iron and carbon (L) - ferrite ( ) – an interstitial solid solution of carbon in Fe (bcc). At room temperature ferrite is ductile but
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were the Japanese- Americans treated unfairly throughout World War Two? The Japanese- Americans were treated unfairly many times throughout World War Two‚ which later led them into the harsh circumstances of the internment camps. For example‚ In A Desert Exile by Yoshiko Uchida‚ states on page 305‚ that “During the first few weeks of camp‚ everything was erratic‚ and low on supplies.” This is saying that Japanese- Americans were put into internment camps‚ and were given only the bare necessities that
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1/9/2013 Mass and Haul Diagram HAUL : product of earth excavated and the distance it was transported to form an embankment or to be disposed as waste. unit: meter – station (metric) = 1 m3 to be transported FREE HAUL DISTANCE (FHD) : fixed distance within which the hauling of material is not paid for but it is assumed to be included in the cost of excavation. OVERHAUL (OH) : product of volume in excess of the free haul mass and the length of overhaul in which payment is already required. LENGTH
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