EASY-HOW-TO Data Flow Diagram (DFD) Tutorial (Manual)
In this video tutorial, you will learn how to:
1. Create a Data Flow Diagram (DFD) Level 0 from a given context or documentation
2. Derive the Context Diagram from DFD Level 0
3. Identify non-functional primitive processes
DISCLAIMER:
1. The 2013 documentation used in this video is for educational purposes only. This may or may not represent anymore the actual Registration System of the University of the Philippines Open University (UPOU).
2. The DFD tutorial is open for interpretation and suggestions, for this DFD is based on the documentation and my actual experience as I am an alumna of UPOU. If you have comments and suggestions for the improvement of the DFD, feel free to comment below. Thank you very much!
Пікірлер: 64
Kakaiba nga talaga pagtuturo sa Pilipinas, ang hirap pag sa abroad, bara bara lang tinuturo. Puro modules pero di maayos magturo. Salamat po talaga! Final year ko na po! ❤️👨🏻🎓
@BlancaflorArada
2 жыл бұрын
Ito kasi ay ginawa ko para sa mga estudyante ko,kahit online ay maiintindihan nila ang dapat nilang matutunan. Saka ayaw ko ring masisi ng mga estudyante ko na wala silang natutunan sa akin 😊 God bless!
@yusofhadjimy469
Жыл бұрын
sinabi mo pa ako nga sa malaysia nakooo ang hirap intindihin lhahahah
What a clear Explanation! Thanks, Ma'am!
@BlancaflorArada
2 жыл бұрын
You're welcome! I am so glad that you gained understanding of the concept. 😊
Thanks Ma'am u made me understand the Diagram flow so vivid ♥
@BlancaflorArada
Жыл бұрын
You're very much welcome! 🥰 I am really glad to hear that it helped you understand the Data Flow Diagram. God Bless you!
Thank you for this Ma'am! I'm a student in University of Makati.
@BlancaflorArada
3 жыл бұрын
Wow, thank you also and you're welcome! I am glad that you find this tutorial helpful. :) Please do not forget to subscribe to my channel. God bless in your studies. :) :) :)
tapos na po kame thank you po ulit :))) shout out to maam bucud we are group PAIRAT AND FRIENDS YES YES!!!
@BlancaflorArada
2 жыл бұрын
Wow, I am happy that my content helped you. 😊
thank you maam, for a very clear explanation
@BlancaflorArada
3 жыл бұрын
You're welcome! I hope my material helped you.
You need to be my teacher, good stuff
@BlancaflorArada
2 жыл бұрын
Wow, I'm really glad that because of my content, you learned about Data Flow Diagram 😊
Hello ma'am, thank you for this content.
@BlancaflorArada
3 жыл бұрын
You're welcome! 😊😊😊
Maaaaa'am, thank you very much 💕💖
@BlancaflorArada
2 жыл бұрын
You're welcome! 😊 I am very glad that my content helped you understand the Data Flow Diagram. God bless!
This was great!!
@BlancaflorArada
3 жыл бұрын
Thank you very much! I hope you learned something from my videos. :)
Thankyou maam so much! present yes yes!!
@BlancaflorArada
2 жыл бұрын
Buti naman at nakatulong ito para maintindihan mo ang DFD 😊
Galing. Keep safe 🙂
@BlancaflorArada
3 жыл бұрын
Thanks po Kuya 😊
thanks so much
@BlancaflorArada
2 жыл бұрын
You're welcome! I am so glad to hear that my content helped you. 😊
Thank you ma'am 😘
@BlancaflorArada
3 жыл бұрын
Most welcome 😊 I hope it helps you how to create a DFD :)
Great effort!!!
@BlancaflorArada
3 ай бұрын
Thank you for your kind words 🥰
loved it.
@BlancaflorArada
2 жыл бұрын
Thank you very much! 😊
Thank you poooooo
@BlancaflorArada
3 жыл бұрын
Thank you! I hope you learned something from my videos. :)
thank you ma'am
@BlancaflorArada
Жыл бұрын
You're very welcome! 🥰 I hope that you learned about Data Flow Diagram. God Bless!
watching from gensan
@BlancaflorArada
2 жыл бұрын
😊
wish this showed all levels of dfd
@BlancaflorArada
3 жыл бұрын
Good day! As much as I want to do all the DFD levels, it depends if the process can still be broken down into sub-processes to produce child diagrams. But if the process is already a functional primitive, then it cannot be exploded further. So the levels of DFD depend upon the documentation of the processes. But the principle of doing first the diagram 0 then the context diagram (specific -> general) is just the same with lower diagrams to ensure that the data flows are easily and properly identified.
@socenprolif7757
3 жыл бұрын
@@BlancaflorArada i just watched a video in which it got broken down to lvl 2
@BlancaflorArada
3 жыл бұрын
@@socenprolif7757 Good to hear that you have found a video for level 2 DFD :)
Hello po, just wanna ask if ilang users po ang needed pa mag function itong enrollment system po?
@BlancaflorArada
3 жыл бұрын
Hello good day! Kung Data Flow Diagram ang pag-uusapan, hindi nito concern ang number of users kasi ang purpose ng DFD e para makita ang "data flow" from one process to the other process. Siguro kung ang concern mo talaga ay ilang users, siguro depende na yun sa scalability ng database server. :)
Yung tunog ng Pentel pen parang di ko kinakaya 😬 pero oks Naman video mo po.
@BlancaflorArada
3 жыл бұрын
I'm sorry if the sound of the pentel pen made you uncomfortable.
@raulmoraleda5927
2 жыл бұрын
ASMR nga eh.
Hello, are you a business analyst?
@BlancaflorArada
3 жыл бұрын
Good day! I am not a business analyst. I am an educator teaching Systems and Analysis and Design. :)
hi mam. sarson model po ito diba?
@BlancaflorArada
2 жыл бұрын
Yes, specifically Gane-Sarson model/notation ito 😊
Ma'am how about po sa Registering Online for Vaccination? Hehe
@BlancaflorArada
2 жыл бұрын
Hi, as I have said in my tutorial, it is easier to create a DFD if you have a documentation or a established SOP. Can you provide such documentation or SOP of online registration for vaccination? Thanks 😊
@pao5845
2 жыл бұрын
@@BlancaflorArada hello mam. We have a complete SRS po. Yung DFD lang po namin di maayos hehe
@BlancaflorArada
2 жыл бұрын
Hello, sorry for very late reply. Kung meron na pala, madali nang gawin ang DFD nyan kasi may pagbabatayan na kayo 😊
SHHH
30:50 ano level napo yan????
@BlancaflorArada
3 ай бұрын
Actually the whole DFD demonstrated in the video is in Level 1.
hindi bayan level 1?
@BlancaflorArada
3 ай бұрын
Yes, it is Level 1.
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
@BlancaflorArada
3 жыл бұрын
Hi sir/ma'am. I'll try to help you out as soon as I finished my academic obligations to my students. 😊
@nakazzihadijjah1465
3 жыл бұрын
@@BlancaflorArada ohh no it's really urgent, just the diagram please