Question regarding the return date and time

Assignment Help Basic Computer Science
Reference no: EM131102805

Question 1

Consider the world of libraries. A library has books, videos, and CDs that it loans to its users. All library material has an id# and a title. In addition, books have one or more authors, videos have one producer and one or more actors, while CDs have one or more entertainers. The library maintains one or more copies of each library item (book, video or CD). Copies of all library material can be loaned to users. Reference-only material is loaned for 2hrs and can't be removed from the library. Other material can be loaned for 2 weeks. For every loan, the library records the user, the loan date and time, and the return date and time. For users, the library maintains their name, address and phone number.

Question 2

Draw a class diagram (or two, if this is more convenient) for the description above. Make sure to show attributes, multiplicities and aggregations/compositions, where appropriate. No need to show any operations.

To give an exam, an instructor first notifies the students of the exam date and the material to be covered. She then prepares the exam paper (with sample solutions), gets it copied to produce enough copies for the class, and hands it out to students on the designated time and location. The students write their answers to exam questions and hand in their papers to the instructor. The instructor then gives the exam papers to the TAs, along with sample solutions to each question, and gets them to mark it. She then records all marks and returns the papers to the students.

Draw a sequence diagram that represents this process. Make sure to show when is each actor participating in the process. Also, show the operation that is carried out during each interaction, and what its arguments are.

Reference no: EM131102805

Civilian and federal it infrastructure

With the current increase in security breaches affecting both the civilian and federal IT infrastructure, it is clear that there are no real IT solutions that can totally pr

Create class diagram for abstract class shape

Create class diagrams for abstract subclasses TwoDimensionalShape and ThreeDimensionalShape which extend abstract superclassShape. TwoDimensionalShape contains method getAre

Different versions of a single operating system

Name several operating systems that run LANs today. Do not include different versions of a single operating system. For each operating system, list its name, the platform or

How dui charges of domestic violence and influence career

Sensitive information and may end up in court as technical or expert witness. How can things like a DUI, charges of domestic violence and other items influence your career?

Advancement of mobile device technologies.

Identify the role you believe mobile devices have on email investigations. Provide an example of the added challenges that have been introduced based on the advancement of m

Design and implement a character generator for dungeons

Use tables and formulas also from workshop file to complete assignment. Design and Implement a character generator for Dungeons and Dragons. It is to have the following spec

Display an appropriate error message

User Radio Buttons with a shared event procedure and a Select Case to determine which text box (State name or abbreviation) should have the focus and which should be set to

Why should you be hesitant to trust this confidence interval

Based on these data, a computer program found that a 95% confidence interval for the mean annual compensation of all Forbes 500 CEOs is (1.69, 14.20) $ million. Why should y


Write a Review

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