wow mind blowing video, breaking all the rules of DFD. What's wrong with youtubers today, even they themselves don't know anything and they are teaching us.
🎯 Key Takeaways for quick navigation: 00:00 📊 Introduction to Data Flow Diagrams - Data flow diagrams (DFD) are graphical representations of data flow within a system. - DFDs highlight how a system is divided into smaller portions and illustrate the flow of data between these parts. 02:10 🧩 DFD Symbols - DFD symbols include squares (representing sources or destinations of data), arrows (identifying data flow), circles/bubbles (depicting processes), and open rectangles (indicating data stores). - Squares denote where data originates or is sent, arrows signify data flow direction, circles/bubbles represent processes, and open rectangles denote data at rest. 06:33 🏗️ Constructing a DFD Example - An example of constructing a DFD for an airline reservation system is shown, with squares representing sources and destinations. - The data flow is illustrated as it moves from the passenger to the airline reservation system, through the travel agent, and eventually to the airlines, showing the flow of information.
Airline reservation system should be in circle. For your kind information you are breaking rules of the data flow diagram. If you don't know about the chapter then don't teach student wrong 🙏
The following are the details of the process documented through an exams handling information system. (i)Candidate submits an official registration form for an examinations purpose at a definite or stated date including the examinations centre. (ii)The exams clerk checks to ensure the exam is actually being held at a specified date and centre. Where there is doubt, the candidate receives back the registration form. (iii)If it is okay, the exams clerk inputs the candidate’s particulars into the computer system. The system then automatically assigns the next accessible or available registration number to the registered candidate, and the last number allocated or assigned on the CANDIDATE-file-plus one. (iv)The examinations clerk inputs the mandatory exams date and centre. The system assigns a seat number accordingly to that candidate for example (from the previous seat number and in that centre on a specified date-plus one). (v)Candidate details (name, centre, number, examination date, address and seat number) are subsequently stored or kept on a CANDIDATE file. The details are printed out and then sent to the destination of the candidate. Required: (a)Construct a suitable process model (for example, a Data Flow Diagram, or Entity Relationship Diagram, or a flowchart) for the above business requirement. (b)Provide the explanatory key to the model for the user to understand the notation. (c)Pinpoint two questions the systems analyst should ask in order to improve the accuracy of your model. Explain the reason for asking eachof the questions. Please help me out
![Data Flow Diagram EXAMPLE [How to Create Data Flow Diagrams]](/img/n.gif)
wow mind blowing video, breaking all the rules of DFD. What's wrong with youtubers today, even they themselves don't know anything and they are teaching us.
the process should be in circle shape ! we cannot draw data flows from one entity to different entity
🎯 Key Takeaways for quick navigation:
00:00 📊 Introduction to Data Flow Diagrams
- Data flow diagrams (DFD) are graphical representations of data flow within a system.
- DFDs highlight how a system is divided into smaller portions and illustrate the flow of data between these parts.
02:10 🧩 DFD Symbols
- DFD symbols include squares (representing sources or destinations of data), arrows (identifying data flow), circles/bubbles (depicting processes), and open rectangles (indicating data stores).
- Squares denote where data originates or is sent, arrows signify data flow direction, circles/bubbles represent processes, and open rectangles denote data at rest.
06:33 🏗️ Constructing a DFD Example
- An example of constructing a DFD for an airline reservation system is shown, with squares representing sources and destinations.
- The data flow is illustrated as it moves from the passenger to the airline reservation system, through the travel agent, and eventually to the airlines, showing the flow of information.
The airline reservation system should be enclosed within a circle as it is a process and not an entity.
Agree with you
I'm happy to watch your tutorial again maam
great explanation i like it
Hi Mam
Kudos for explaining the concept in easy to learn way, that too teaching in English
So nice mam 😊
Madam sir..... Madam anthey🥳🥰🥰
something wrong with that diagram. how can data travel between two entities according to her dfd? no process in between?
process should be in circle or bubble source or destination in square
Hi professor, do you have a textbook for this course to learn? Or what do u think is the best books for OOAD ? Thanks
Just half hour before exam
How did you do
@@nemanjamarjanovic3839 who r u
Airline reservation system should be in circle. For your kind information you are breaking rules of the data flow diagram.
If you don't know about the chapter then don't teach student wrong 🙏
Context flow diagram are same in data flow diagram are same
The following are the details of the process documented through an exams handling information system.
(i)Candidate submits an official registration form for an examinations purpose at a definite or stated date including the examinations centre.
(ii)The exams clerk checks to ensure the exam is actually being held at a specified date and centre. Where there is doubt, the candidate receives back the registration form.
(iii)If it is okay, the exams clerk inputs the candidate’s particulars into the computer system. The system then automatically assigns the next accessible or available registration number to the registered candidate, and the last number allocated or assigned on the CANDIDATE-file-plus one.
(iv)The examinations clerk inputs the mandatory exams date and centre. The system assigns a seat number accordingly to that candidate for example (from the previous seat number and in that centre on a specified date-plus one).
(v)Candidate details (name, centre, number, examination date, address and seat number) are subsequently stored or kept on a CANDIDATE file. The details are printed out and then sent to the destination of the candidate.
Required:
(a)Construct a suitable process model (for example, a Data Flow Diagram, or Entity Relationship Diagram, or a flowchart) for the above business requirement.
(b)Provide the explanatory key to the model for the user to understand the notation.
(c)Pinpoint two questions the systems analyst should ask in order to improve the accuracy of your model. Explain the reason for asking eachof the questions.
Please help me out
kaha se ho aap bigg fan you maam ji
But I think something is missing. Anyway, Thank you madam for this explanation.
I want bca software engineer second unit full video plz mam I cnt understand in notes plz
thankyou mam
Add more example toward the DFD topic
Thank you mam
SRF square ka use ku Kiya h Apne🤔
please don't misguide to students when you have not enough knowledge about any tropic.
Can you speak Telugu ?
HAHAHAHAHA
...Entity to Entity how can flow ? How funny..
Dont teach wrong concepts
vater...
DFD representation is completely wrong.
maam ji ekbaar muh tho dikadho
Wrong information
Ma'am I want dfd level 1 diagram
Kuch bhi banaya hai
whole concept is wrong ......i didn't understand a single thing. just stop- making youtube vedios
Add more example toward the DFD topic