Computer Science

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Computer Science


Using Internet or Wireless Technology

Question Are you hesitant to use the Internet or wireless technology for purchases due to security concerns? Why or why not? Are you hesitant to use technology because of privacy concerns? ... Read More

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Evaluate a Web site Based on Visibility and Affordance

Question Find a Web site with direct customer ordering. Browse through some product descriptions and note the design of the dialog and the Web pages. What do you like and dislike about the design? Evaluate the Web site based on visibility and affordance. Does the site achieve an optimal balance bet ... Read More

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Report on Findings of an IT Security Assessment of a Company

Question Conduct an IT security assessment in the company of your choice and provide a report about your findings. Your report should include (but not be limited to) the following: I. An overview of the company IT infrastructure: Hardware Software        & ... Read More

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Foundations of Modern Systems Design

Question Notebook Computer Servicing Pte Ltd owns four notebook servicing centers. A notebook serviced by a service center belongs either to an individual or a corporate body registered with the service center. Each service center employs several technicians to carry out the servicing. Notebook Co ... Read More

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Foundations of Modern Systems Design

Question For each of the following situations, write down the name of the collection class you think is most suitable model; give a brief justification for your choice; write Java code to create an instance of the collection class you have chosen, assign it to a suitably named variable, and ad ... Read More

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Case Diagram for the Application of Payment Modes of a Institution

Question Uni Institution is a new private institution that is involved in running full-time diploma courses, part-time diploma courses and short industrial courses. Uni Institution intends to develop a system to track its activities (such as classes, class sessions etc), enrolments, revenues and e ... Read More

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Web-based IMS and CMS for Managing an Online Art Gallery

Question CASE STUDY: Web-based IMS and CMS for managing an online art gallery As a freelance developer, you’ve been commissioned to undertake the following development project, made up of three main “Modules”: The official website of a family-run online modern art gallery, as ... Read More

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Computer Program for Tic Tac Toe Game for Two Players

Question In a Tic Tac Toe game two players, X and O, take turns to mark the spaces in a 3X3 grid. The winner will be the player who first succeeds in placing three of his/her marks in a horizontal, vertical, or diagonal row. Write a program for a computer (X player) to play with a human (O player) ... Read More

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Scenarios in a k-way Merge Sort of a File

Question Consider the following two scenarios in a k-way merge sort of a file. _ The file has 20,000 pages and the buffer has 7 available frames. _ The file has 2,000,000 pages and buffer has 15 available frames. For each of the above scenario, answer the following questions assuming the best us ... Read More

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Estimation of I/Os  Cost for Join Algorithm

Question Consider the join R 1R:a=S:b S of relations R and S with the following information. R has 10,000 tuples and a blocking factor of 10. S has 2,000 tuples and a blocking factor of 10. S.b is the primary key of S. Both R and S are stored in simple heap files and neither relation has any in ... Read More

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Efficient Evaluation Plan for a Query and Estimation of its Cost in Pages

Question Consider relation Executives(ename, title, dname, address), where all attributes have the same length and ename is a candidate key. The relation contains 12; 000 pages and the buffer has 10 pages. Assume that 10% tuples satisfy the following query. Select E.title, Count(*) From Executi ... Read More

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Drawing Initial and Optimized Data Tree

Question Consider the database schema emp(eid, did, sal, hobby) dept(did, dname, floor, phone) finance(did, budget, sales, expenses) and the following query. Select D.dname, F.budget From emp E, dept D, finance F Where E.did=D.did and D.did=F.did and D.floor=1 and E.sal>=49000 and E.hobb ... Read More

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