Identify design patterns, Computer Graphics

Assignment Help:

Mauri Ltd has just acquired a new stock management system and the source codes (PhP5) also have been delivered. The coding style is fully object-oriented. The company has been using the system for two weeks and is not satisfied with it. For each user accessing the system, a new connection is made. The User Interface (UI) is not standard. Each update to the database is treated by a separate program. Search facilities have been included but different programs have been written to provide such facilities. You have been asked to refactor the system using Design Patterns.

(a) Identify five design patterns that can be used. Describe how each pattern can be used in the above context. Your answer should consist of a detailed description of the pattern including the structure (diagram) and a justification for its use. Note: Sample codes may be used to explain your answer.

(b) "Familiarity sometimes keeps us from seeing the obvious." In what way can patterns help avoid this?

(c) What are three reasons that cause requirements to change?

(d) What could Christopher Alexander discover by looking at structures that solve similar problems?


Related Discussions:- Identify design patterns

Improving gif compression, Improving GIF Compression: Features of LZW comp...

Improving GIF Compression: Features of LZW compression can be used to enhance its efficiency and thereby decrease the size of your graphic interchange format graphics. The strateg

What are the important applications of computer graphics, Can you list at l...

Can you list at least three important applications of computer graphics? There are lots of interesting applications of computer graphics. Three common applications are compute

Remark for the bresenham line generation algorithm, Remark for the Bresenha...

Remark for the Bresenham Line Generation Algorithm Remark: The algorithm will be properly the same if we suppose | m | Algorithm | m | (a) Input two line endi

Please give me ans, Differences between digital differential analyzer and ...

Differences between digital differential analyzer and VECGEN line algorithm?

Briefly explain how the median filter works, QUESTION 1 (a) Write a run...

QUESTION 1 (a) Write a run method in Image J environment for the following cases Contrast and Brightness Histogram Generation Histogram Equalisation   (b)

Historical method – oral tradition, Historical method - Oral tradition: ...

Historical method - Oral tradition: Only the teacher was the source of information The teacher treated as a role model. The teacher was the main resource to meet indiv

Aspect ratio - display devices, Aspect ratio - Display Devices Ratio of...

Aspect ratio - Display Devices Ratio of vertical points to horizontal points necessary to produce equal length lines in both directions on the screen. For example, in a CRT mon

Explain difference between impact and non-impact printers, What is the diff...

What is the difference between impact and non-impact printers?  Impact printer press produced character faces against an inked ribbon on to the paper. A line printer and dot-ma

Avi codec format, AVI CODEC Formats: Various AVI file formats other than t...

AVI CODEC Formats: Various AVI file formats other than the DV Types 1 and 2 formats are there discussed earlier. All such the other formats involve the utilization of Compressor o

Describe digital printing and prepress, Question 1: (a) Describe Digita...

Question 1: (a) Describe Digital Printing and Prepress? Also state the advantages and disadvantages of Digital printing? Question 2: (a) What are the three most import

Write Your Message!

Captcha
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