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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Vision & Mission Statement: H & R block vision is to be the preferred tax and financial partner for each of their customer in every market they serve. Their mission is to help clients achieve their financial objectives by serving as a tax and financial partner. They strive to achieve this by being client focused and building trust with their client. H&R Block lays emphasis on providing high quality service to exceed their client’s expectation. Yes H & R block current mission and vision statement
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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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problem solving blocks? A block is anything which prevents us finding an effective solution to a problem. We all experience them‚ but of different types and intensities. The blocks have been grouped in various ways by different authors according to their cause‚ eg perceptual emotional intellectual expressive environmental cultural It’s important that you are able to recognise when blocks are hindering your problem solving so that you can take action to overcome them. What causes these blocks? The labels
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6 Pg 305 2. What is a data flow diagram? Why do systems analysts use data flow diagrams? Answers: A picture of the movement of data between external entities and the processes and data stores within a system. Systems analysts use DFDs to help in the analysis phase by accomplishing the following three things: 1. Requirements Determination 2. Requirements Structuring 3. Alternative Generation and Selection 3. Explain the rules for drawing good data flow diagrams. Answers: Process: A. No process
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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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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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The Building Blocks of Language Any discussion of human thought processes must include a discussion of language. Language is a foundation or building block of thinking. Language also has three building blocks. These building blocks provide structure and produce language. To produce language‚ one must build words using phonemes and morphemes‚ and then string those words into sentences using the rules of grammar; syntax and semantics. The first building block is a phoneme. They are the most basic
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Abstract Similar to roller-coaster motion‚ this experiment analyzes the relationship between the kinetic energy of a wooden block and the distance a mass falls. Based on the results‚ the block’s kinetic energy and velocity increase with the falling distance‚ as predicted. But little changes in velocity near the end of the motion show that friction and other factors might be important. The block’s maximum velocity ranged from 0.869 to 1.193 m/s at different falling distances‚ and its resulting kinetic
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Sensorial Cylinder Blocks Material: Four blocks containing ten cylinders with knobs; each fitting into its respective hole. Block 1: Ten cylinders varying in diameter only Block 2: Ten cylinders varying in height and diameter from tall and wide to short and narrow Block 3: Ten cylinders varying in height and diameter from tall and narrow to short and wide Block 4: Ten cylinders varying in height only Aims: To refine the child’s visual perception of dimension To refine the child’s co-ordination
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