Data flow Diagrams Ideas

Refer to the activities in the links below for further leanring

http://www.sqa.org.uk/e-learning/SDM03CD/page_06.htm#DiffPhysLog


http://www.conceptdraw.com/How-To-Guide/picture/Payment-Data-Flow-Diagram.png

Medical DFD
http://www.emeraldinsight.com/content_images/fig/1770140308006.png

Memoire
http://www.memoireonline.com/10/10/4048/Design-and-implementation-school-management-system18.png

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjc0SjdYtU6QL-EDG6e9P6TqyjwVR8VHCvnT36EqxlGeQqzCgS_O-vUd921v6BUFHAo-R4E_3yNxRKvi3BsSaPpLBNxGZ8YbbWbiPidzYt_drZ9kGHhWvxr3LgfF_4j7ET0NgnilOelIKa7/s1600/untitled1.bmp

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyE_c38krXdHLRwewU1U8rGBBwGYHjVFypAEgxc_ezJBtrm2-V_PjTcZNRqze8vsHHRa6wxtcWf-KVuPKDqgR-69SBv1Zj6nvvqfNM-D0I9Rlvc9Ejo5szJKPF8RfLJ8MsshCzrP8o_oE8/s1600/untitled2.bmp

http://www.excelsoftware.com/image/ganesarsondfd.gif

Important Information on the May Examination

The following are some of the Examination Areas to be tested
Digital Activism Unit

• IT technologies used for activism
• How the technologies work or the way they have been used by stakeholders in past
• The impact of using those technologies
•  Concerns and issues resulting from using the technologies

Leisure, Pleasure Unit

• Review of some entertainment Information technologies tools in use
• Examine how the technologies work/function in particular sectors of entertainment 
• The impact of using  information technologies in entertainment
• Issues resulting from using the information technologies in entertainment and solutions to some related problems

Transport Unit (The case study material and research will be used in the question)

• Review of some of the taxi systems information technologies as stated in case study material and other researched information.
• Examine how the different technologies function as used in running an taxi businesses.
• The impact of using different information technologies in management of taxi business.
• Issues resulting from using the information technologies and solutions to some of the related problems

  N/B
-There will be three sections in the exam. You will answer only one question from each of the section
-The Technology exam will be 1 hr 30 mins
-The following command terms will be used in each of the questions
            a) Identify
            b) Describe
            c) Explain
            d) Evaluate

Critical Thinking
When answering question from the different command terms, learn to use the trigger words in Describe, Explain and Evaluate which often signal critical thinking. 
The bold words are the key terms in the various criteria.
Identify / Define- Requires a brief response or just a list.
Describe- shows a technical process step by step, using an example is recommended  
Explanation - Because, as a result of, due to, therefore, consequently, for example
Evaluation - My opinion, overall, although, despite, on balance, on weighing up

Design Stage: Based on the Case study

Data Flow Diagrams

•Data flow diagram (DFD) is a modeling technique that illustrates and explains the movement or flow  of information in a process based on the inputs and outputs. 

The DFD below explains the movement of information in a mail  order computer system

DFD is very useful in explaining how data flows with any computer system being developed.

Some common symbols used  DFD

 

When developing a DFDs it is expected that conventional symbols are used.

DFD Activity

 Examine the following instruction outline and then is how DFD has been drawn to model the situation. 

Instruction

When a patient arrives at Mosspark Surgery with a repeat prescription request, the receptionist checks the prescription file and writes out a prescription. This has to be authorized by the doctor before being passed to the resident chemist for dispensing. The chemist then gives the prescription to the patient. If the patient is entitled to free prescriptions, the chemist verifies this and fills in the appropriate details on a form, which is filed in the free prescriptions file. Otherwise the chemist takes the appropriate amount of money from the patient and gives them a receipt.

Below is DFD that represents the above instructions

Based on your research on the Taxi system suitable for the Red Dragon Taxi Company, you will drawn or design a detailed Data Flow Diagram for the client.

Your Data flow diagram activity will be into in two sections;

a)     Detailed instructions outline providing all the details of how data will flow in the proposed Taxi management System

b)     A comprehensive DFD that models the situation described above.

N/B

-       Assessment criteria will be ready over the weekend

-       Work should be done independently

-       More research on DFD symbols and using them will be of advantage

-        Design stage work will be due Friday  2^nd May 2014