Draw a use case diagram to represent actors in system

Assignment Help Database Management System
Reference no: EM13946027

Q1: Draw a data model diagram with associations for the user view from below with the values.

Q2: Convert the user view in Part A to a 3NF relation. Make sure to show each step along the way.

Q3. Ayman’s Office Supplies Company recently had a new information system installed to help its managers with inventory. In speaking with the managers, you notice that they seemed disgruntled with the system output, which is a series of displays that show current inventory, customer and supplier addresses, and so on. All screens need to be accessed through several special commands and the use of a password. The managers had several opinions about the system but had no systematic way to evaluate it.

A. Devise a checklist or form that helps Ayman’s managers evaluate the utilities of an information system.

B. Suggest a second way to evaluate the information system. Compare it with what you did in part A above.

Q4. As Dewey Dezmal enters the high-ceilinged, wood-paneled reading room of the Ruminski Public Library, a young woman, seated at a long, oak table, pokes her head out from behind a monitor, sees him and stands, saying, "Welcome. I'm Peri Otticle, the director of the library. I understand you are here to help us develop our new information system." Still in awe of the beauty of the old library building and the juxtaposition of so much technology amid so much history, Dewey introduces himself as a systems analyst with a small IT consulting firm, People and Objects, Inc. "It's the first time I've been assigned to this type of project, although it's actually interesting for me, because my degree is from the Information Studies School at Upstate University. You can major in library science or IT there, so lots of my classmates went on to work in public libraries. I opted for the IT degree." "We should work well together, then," Peri says. "Let's go to my office so we don't disturb any patrons, and I can talk you through a report I wrote." As they pass the beautiful, winding staircase seemingly sculpted in wood, Peri notices Dewey looking at the surroundings and says, "You may wonder about the grandeur of the building, because we are a public institution. We are fortunate. Our benefactor is Valerian Ruminski. In fact, he has donated so much money to so many libraries that the staff affectionately calls him "Valerian the Librarian." As they pass several patrons, Peri continues, "As you can see, it's a very busy place. And, regardless of our old surroundings, we don't dwell in the past." Dewey reads the report Peri has handed him. One large section is titled "Summary of Patrons' Main Requirements," and the bulleted list states:

* A library patron who is registered in the system can borrow books and magazines from the system.

* The library system should periodically check (at least once per week) whether a copy of a book or journal borrowed by a patron has become overdue. If so, a notice will be sent to the patron.

* A patron can reserve a book or journal that has been lent out or is in the process of purchase. The reservation should be canceled when the patron checks out the book or journal or through a formal canceling service.

As Dewey looks up from the report, he says to Peri, "I'm beginning to understand the patron (or user) requirements. I see lots of similarities between Myoid university library and yours. One item I didn't see covered, though, was how you decide what the library should collect and what it should get rid of.". Peri chuckles and replies, "That's an insightful question. The library staff handles the purchase of new books and journals for the library. If something is popular, more than two copies are purchased.

We can create, update, and delete information about titles and copies of books and journals, patrons, loan of materials, and reservations in the system." Dewey looks up from his note pad and says, "I'm still a little confused. What's the difference between the terms title and copy?" Peri responds, "The library can have several copies of a title. Title normally refers to the name of a book or journal. Copies of a title are actually lent out from the library." Based on Dewey's interview with Peri and the requirements description in her report, as well as your own experience using library services, use the UML to answer the following questions. (Note: It is important to make sure your solutions are logical and workable. State your assumptions clearly whenever necessary.)

A. Draw a use case diagram to represent actors and use cases in the system.

B. For each use case, describe the steps (as you did to organize the use cases).

C. Describe scenarios for the steps. In other words, create a patron and write up an example of the patron as he or she goes through each step.

D. Create sequence diagrams for use cases based on steps and scenarios.

E. Complete the class diagram by determining relationships between classes and defining the attributes and methods of each class.

Reference no: EM13946027

Questions Cloud

What is gencorp market debt-equity ratio : GenCorp has a total debt of $140 million and stockholders' book equity of $50 million. It also has 25 million shares outstanding, with a market price of $3.50 per share. What is GenCorp's market debt-equity ratio?
Calculate the present value of this investment : Your banker visits you and tells you of an investment that pays you $150 at the beginning of every 3 months for the next 3 years and $2,000 at the end of 3 years. Suppose the current interest rate is 2% p.a. compounded quarterly. Apply the princip..
What are the strengths of irelands hr strategy : What are the strengths of Ireland's HR strategy? Be specific. What are the weaknesses of the strategy? What specifically should leaders do to improve future strategic plans?
Develop a creative strategy for an advertising campaign : Explain the objectives of an integrated marketing communication and its use of the elements of the promotional mix. Evaluate the use of alternative mediain an advertising campaign.
Draw a use case diagram to represent actors in system : A patron can reserve a book or journal that has been lent out or is in the process of purchase. The reservation should be canceled when the patron checks out the book or journal or through a formal canceling service.
Who pays the medical insurance for employees : Who pays the medical insurance for employees? If the employer pays, then savings from healthier employees will pay for the center.
Discuss the difference between subnetting and supernetting. : Discuss the importance of subnetting with respect to collisions, broadcasts and controlling traffic
Explain the functions of the foreign exchange market : Discuss the differences between translation, transaction and economic exposure and what managers can do to manage each type of exposure. Write your paper in 4-5 double-spaced pages.
Crime prevention through environmental design : Discuss the crime prevention through environmental design (CPTED) risk reduction philosophy. What are the major elements of CPTED, and how do they help prevent and prepare for workplace violence events?

Reviews

Write a Review

 

Database Management System Questions & Answers

  Compare the pros and cons of consolidating data

Compare the pros and cons of consolidating data on a SAN central data facility versus the dispersed arrangement it replaces. Evaluate the issues raised from the Carlson SAN mixing equipment from a number of vendors and determine the management option..

  Create a new database and name it orders

Purpose of this hands-on computer exercise is to have you learn how to use Microsoft Access to: create a database table, enter data into the table, create a report based on the data, and print the table and the report.

  Calculated field query and define a new field timespent

Calculated field query with table JOIN: Find the ticket numbers and the users submitted the tickets, for those tickets that take more than 5 days to resolve, define a new field TimeSpent, which is the time resolved minus the time ticket was submit..

  Create a data structure for the screen in the diagram

Create a data structure for the screen in the diagram. This will have components from both data stores

  A database to keep track of information for her business

A database to keep track of information for her business

  Bioinformatics for representing sequence annotation

The GFF3 format is a commonly-used one in bioinformatics for representing sequence annotation and which ID (cv_id) corresponds to the GO ontology stored in the database and how many controlled vocabulary terms (cvterm table) are linked to the GO onto..

  1 which is not a factor to consider in software evaluationa

1. which is not a factor to consider in software evaluation?a. performance effectivenessb. performance efficiencyc.

  Assignment related to er diagram

Question 1: How clear andwell-presented your submission is. Question 2: E-R diagram:adherence too your standard,assumptions made,in clusion of correct primary and foreign keys,appropriate entities,relationships,and attributes.

  Find all non-trivial dependencies

Compute the closure sets of R, find all non-trivial dependencies and what are the candidate keys of R?

  Write down sql dml statements which address the given

write sql dml statements that address the following requirements 1 update the employees table and give all employees

  What are the current relational dbmss that dominate market

What are the current relational DBMSs that dominate the market? Pick one that you are familiar with and show how it measures up based on the criteria laid out in Section 10.2.3

  Develop view for sum of number ordered multiplied by price

Develop a view named OrdTot. It comprises the order number and order total for each order presently on file. (Order total is sum of the number ordered multiplied by quoted price.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd