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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Entity-Relationship (E/R) Model Dr P Sreenivasa Kumar Professor CS&E Dept I I T Madras Entity-Relationship (E/R) Model Widely used conceptual level data model • proposed by Peter P Chen in 1970s Data model to describe the database system at the requirements collection stage • high level description. • easy to understand for the enterprise managers. • rigorous enough to be used for system building. Concepts available in the model • entities and attributes of entities. • relationships between
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TERNARY PHASE DIAGRAMS An Introduction Guna Selvaduray San Jose State University Credit for Phase Diagram Drawings: Richard Brindos Credit for scanning the phase diagrams: Brenden Croom G. Selvaduray - SJSU - Oct 2004 Utility of Ternary Phase Diagrams Glass compositions Refractories Aluminum alloys Stainless steels Solder metallurgy Several other applications G. Selvaduray - SJSU - Oct 2004 References on Ternary Phase Diagrams A. Prince‚ Alloy Phase Equilibria‚ Elsevier Publishing
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Assignment 2: Use Cases Objective Automatic teller machines (ATM) are electronic banking system that allows custom with a debit or credit card to access their account to make some basic transactions such as withdrawal‚ deposit‚ or transfer. Our object is to developed use cases to support the bank ATM service‚ that include all scenario such as customer withdrawing money from an ATM‚ making an account deposit‚ making an account transfer. Identify and discuss any ethical issue maybe
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permitted to work next to each other. Both employees and the Union representing them filed charges of discrimination. The EEOC determined that there was reasonable cause of discrimination; violating Title VII of the Civil Rights Act of 1964. The case ended up in the federal district court. The court granted motion for summary judgment. ISSUE: Does this rule violate Title VII? DECISION: No. The court reversed and remanded their decision. REASONING: The court did not find that there
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ACCT505 Part B Capital Budgeting problem Clark Paints‚ Inc. Data: Cost of new equipment $200‚000 Expected life of equipment in years 5 Disposal value in 5 years $40‚000 Life production - number of cans 5‚500‚000 Annual production or purchase needs 1‚100‚000 Initial training costs 0 Number of workers needed 3 Annual hours to be worked per employee 2‚000 Earnings per hour for employees
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Data Dictionary entry for a process from 1 to 5 Data Dictionary entry for a process 1 Process Name : Accept Order Process Number : 1 Purpose : Collect customer details‚ order details and store these details Input Data Flows : ORDER DETAILS Output Data Flows : CUSTOMER DETAILS‚ ORDER DETAILS Process description : This process accepts all customer order to rent DVDs and then stores all customer details and order details in the memory. Notes : The system stores the customer and order details
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Use Cases BY: Jessica Figuereo INST: Ibrahim Elhag Date: 02/03/2013 Bank customers use ATM ’s for different services. They withdraw‚ deposit‚ check balances‚ and even transfer money. There is a process that goes with each of these services. To begin the customer inserts their debit into the ATM machine. The ATM then reads the customer card and requests a valid pin number. Once the correct pin number has been entered a list of choices is presented. In order to withdraw money the customer
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Case Project 3-1 First I would begin by incorporating the star topology with an extended topology. I would do this because I can upgrade the network by replacing the problem components such as the 10mbs Ethernet hubs and the existing cables. I would replace the hub with a gigabit switch and add gigabit wireless router for the five computers to connect to the network. I would replace the 10 computer network interface cards with a 10/100/1000 Mbps NIC and replace the old cable with cat6 Ethernet
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ACCT505 Part B Capital Budgeting problem Clark Paints Data: Cost of new equipment $200‚000 Expected life of equipment in years 5 yrs Disposal value in 5 years $40‚000 Life production - number of cans 5‚500‚000 Annual production or purchase needs $1‚100‚000 Initial training costs Number of workers needed 3 Annual hours to be worked per employee 2000 hrs Earnings
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