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Showing posts with label Computer Science. Show all posts
Showing posts with label Computer Science. Show all posts

Tuesday, 18 February 2014

UML Library Book Borrow Ststem Complete solved

Midterm questions
Create a set of detail use case descriptions and draw a use-case diagram for a university library borrowing system (do not worry about catalogue searching, etc.). The system will record the books owned by the library and will record who has borrowed which books. Before someone can borrow a book, he or she must show a valid ID card, which is checked against the student database maintained by the registrar's office (for student borrowers), the faculty/staff database maintained by the personnel office (for faculty/staff borrowers), or against the library's own guest data base (for individuals issued a guest card by the library) to ensure that it is still valid. The system must also check to ensure that the borrower does not have any overdue books or unpaid fines before he or she can borrow another book. Every Monday, the library prints and mails postcards to those people with over due books. If a book is overdue by more than two weeks, a fine will be imposed and a librarian will telephone the borrower to remind him or her to return the book(s). Sometimes books are lost or are returned in damaged condition. The manager must then remove them from the database and will sometimes impose a fine on the borrower.? Please make sure to use the use case description template available on the web site and the guidelines discussed in class.


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Tuesday, 24 December 2013

network administrator



You are the network administrator for a group of 24 groundwater hydrologists who work in two adjacent buildings. Their company works with new housing construction all over the United States to determine if there is enough local ground water to support new housing developments. Each hydrologist has his or her own computer workstation. Two use computers running Linux, three use Macintosh OS X Snow Leopard computers, and the rest use computers running Windows Vista or Windows 7. These hydrologists work with a variety of software, including word-processing, research databases, spreadsheets, mapping software, and mathematical calculation software. The buildings in which the hydrologists work are not networked, but the company plans to network each building and connect both networks. The company also decided to purchase a Windows Server 2008 R2 server for all of the hydrologists to access. The server will be in a secure computer room in one of the buildings. Also, the company plans to connect to an Internet service provider so that each hydrologist can easily access the Internet. Explain how you would handle the following immediate concerns:

In one paragraph for each question, complete the questions below using complete sentences

What equipment must be purchased for each hydrologist’s computer to be connected to the network? How would you configure the equipment, such as configuring protocols?

What are the advantages of implementing a server in terms of the new networking environment for this company?



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Lab4 JSmith


STEP 1
Download the Lab4_Database.accdb database from Doc Sharing.
Rename the Lab4_FormsReports.accdb database with a name containing Lab4_, your first initial, and your last name as the file name (e.g., Lab4_JSmith.accdb).
STEP 2
Back to top
Run Access 2010, either via Citrix or from Visio 2010 installed on your workstation.
Open the database you renamed in Step 1.
See the tutorials above for instructions on how to perform the following steps in Access 2010.
STEP 3
Reports
Create a report for each of the following requirements. Reports may be created using the wizard or an SQL query. Reports should follow the formatting guidelines given in the next step. Reports should be named as indicated below (e.g., Report1, Report2, etc.).

Report1: Show Instructor information (Instructor_ID, First_Name, Last_Name) grouped by Approved Course_No.
Report2: Show student information (Student_ID, First_Name, Last_Name, Status, Zip) grouped by Major.
Report3: Show student information (Student_ID, First_Name, Last_Name, Major) grouped by Zip code. Zip codes should be in increasing order.
Report4: Show student information (First_Name, Last_Name) grouped by Course Number and Course Name. Course Number should be in in increasing order.
Report5: Show student information (Student_ID, First_Name, Last_Name, Address, Zip) grouped by Status. Students should be in alphabetical order by Last_Name and;then First_Name.

STEP 4
Report Format
Reports should display two or more child rows for each parent row. For example, Report1 should display each Course_No with instructors who are approved to teach the course grouped under it. In this case, the parent row would be the Approved Course_No with Instructor listed as child rows underneath each parent row
There should be at least two child rows of data for each parent row. Add data to the tables in order to have reports show at least two child rows per parent.

STEP 5 Back to top
Form1: Create a form based on an SQL query.
Create and run an SQL query that displays Student Information (Student_ID, First_Name, Last_Name, Address, Zip).
Save the query in the database named Form1Query.
Create a form based on Form1Query. While Form1Query is selected, go to the Create menu and select Form to build the basic form.
Select the form and switch between the views (Forms, Layout, and Design) to change the properties or the form's appearance as desired.
Save the form in the database named Form1Query.

STEP 6
Form2: Create a form using the Form Wizard.

Invoke the Form Wizard as shown in the tutorials above.
Using the Form Wizard, create a form showing instructor information (Instructor_ID, First_Name, Last_Name, Office_No).
Switch between the views (Forms, Layout, and Design) to change the properties or the form's appearance as desired.
Save the form in the database named Form2Wizard.

STEP 7
Form3: Create a form using a master detail relationship. A master detail relationship is simply a 1:N relationship between two tables. Use subforms to format the form in a split data entry form as shown in Figure 1-9. You may use SQL queries or the wizard or both to create your form and subform.
Create a master form showing student information (Student_ID, First_Name, Last_Name, Address, Zip, Major, Status).
Create a detail Subform showing Student_ID, Class_ID, and Student_Grade.
For each student displayed, the student's classes and grades should be displayed in the detail form.
Switch between the views (Forms, Layout, and Design) to change the properties or the form's appearance.
Save the form in the database named Form3MaterDetail.

STEP 8
When you are done, save the file on your local hard drive and upload it to the Week 7 Course Project Dropbox. Your file should have the following filename format: Lab7_FirstInitialLastName.accdb

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Python 3.3 spreadsheet program



Python v.3

Spreadsheet programs such as Microsoft Excel or Open Office Calc have an option to export data into CSV files. In this exercise, you will create a program that will read in a spreadsheet (in CSV format) and manipulate it. Provide the following capabilities:
-print data
-delete row or column
-insert row or column
Change a value in a cell
output the data in CSV format

Issues to consider:
-Use Python's csv module to read in a spreadsheet. Choose an appropriate data structure to store the data. Should you use lists, tuples, or dictionaries?
-Construct a driving loop in your program that will prompt for the operations specified previously. A useful interface is to allow choices to be specified with a single letter related to the operation--e.g., d for delete.

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Monday, 23 December 2013

Uml



B. Create UML Use Case Diagrams that could be inserted into a Software Requirement Specification (SRS) document that captures all functional requirements for this application. Use the task description in part A to elicit the requirements. You will only be required to document the functional requirements and provide Use Case diagrams. You do not have to complete a complete SRS document.

1. Document the functional requirements with UML use case diagrams for each requirement. For eachfunctional requirement provide the following:

• Requirement number and title

• Description of the functionality

• Input

• Results of processing or output

• Error handling or recovering requirements outlined

• UML use case diagrams (It is very important that your UML use case diagrams are complete and proper UML 2.0 Modeling notation is used.)



C. Create UML Class and Sequence Diagrams that could be inserted into a Software Design Specification (SDS) document. (It is very important that your UML diagrams are complete and proper UML 2.0 Modeling notation is used. Your design must be an object-oriented design.) You will only be required to submit the class and sequence diagrams and not have to complete a SDS document.

1. Your UML Diagrams should include the following:

a. Comprehensive Class Diagrams: Show all classes and all relationships among all classes. These should include the following:

• Relationships: Your object oriented design will require you to diagram all class relationships using correct UML 2.0 Modeling notation which minimally includes:

- Inheritance

- Association Relationships

• Multiplicity: Note any multiplicity in the relationships (e.g., 1-1, 1-many, etc.) using correct UML 2.0 Modeling notation.

• Attributes: For each class, all attributes with types (e.g., int, double, etc.) and access control (e.g., private, public, protected) need to be noted using proper UML 2.0 Modeling notation.

• Methods: Methods with signatures and access control should be provided. All methods have to be indicated, including all constructors, setters, and getters.

• Abstract Classes and Interfaces: Any abstract classes and interfaces used in your design must be properly indicated using UML 2.0 Modeling notation.

b. Sequence Diagrams: Model the object interactions required for each functional scenario. For each Use Case provided in the functional requirements section, at least onesequence diagram should be provided to model the interaction between the objects inside the application.

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Stock tracker and Debugging


1. Programming assignment.
2. 8 question debugging exercise

4 Using a Database Query Result
Write a Java program to query the StockTracker database for all users and all stocks held by each user. List the user’s ID, first name, and last name followed by their stocks, including both the stock symbol and stock description (name). This can be a console application that produces output to the screen, as shownin Figure 11-80. Use the project, StockTracker, to add additional users and stocks, if necessary. For an extra challenge, use only the StockTrackerDB data access class to obtain data from the database.


Debugging Assignment
Find and fix the error in each line of code. Each line contains only one error.
Indented lines continue the previous statement.
1. forName("sun.jdbc.odbc.JdbcOdbcDriver");
2. String dbn = " AutoParts";
3. Connection con = getConnection(dbn);
4. Statement stmt = DriverManager.createStatement();
5. stmt.executeUpdate("CREATE TABLE StockItemsitemID INT "
6. +"CONSTRAINT PK_Item PRIMARY, "
7. +"CONSTRAINT FK1_Item REFERENCES PartDesc (partno) "
8. +"qtyOnHand INT, price SINGLE, cost SINGLE");
 


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