Tutorial on How to Draw a Data Flow Diagram (DFD)

8/9/2019 Tutorial on How to Draw a Data Flow Diagram (DFD)

1/13

2/12/2015 T utor i al on how to dr aw a data fl ow di agr am ( D F D )

http://w w w .vi sual - par adi gm .com /tutor i al s/data- fl ow - di agr am - dfd.j sp 1/13

W HAT ' S N EW F EA TU RE S LEARNING SUPPO RT BUY DOWNLOAD Se a r ch

Data Flow Diagram (DFD) Tutorial

What is a data flow diagram (DFD)?

Da ta Flo w Dia g r a ms ( DFD) h e lp s u s in id e n tifyin g e xistin g b u sin e ss p r o ce sse s. It is a

te ch n iq u e we b e n e fit fr o m p a r ticu la r ly b e fo r e we g o th r o u g h b u sin e ss p r o ce ss r e -

e n g in e e r in g .

At its simp le st, a d a ta flo w d ia g r a m lo o ks a t h o w d a ta flo ws th r o u g h a syste m. It co n ce r n s th in g s like wh e r e th e d a ta will co me fr o m a n d g o

to a s we ll a s wh e r e it will b e sto r e d . Bu t yo u wo n 't fin d in fo r ma tio n a b o u t th e p r o ce ssin g timin g ( e .g . wh e th e r th e p r o ce sse s h a p p e n in

se q u e n ce o r in p a r a lle l) .

We u su a lly b e g in with d r a win g a context diagram, a simp le r e p r e se n ta tio n o f th e wh o le syste m. To e la b o r a te fu r th e r fr o m th a t, we d r ill

d o wn to a level 1 diagram with a d d itio n a l in fo r ma tio n a b o u t th e ma jo r fu n ctio n s o f th e syste m. Th is co u ld co n tin u e to e vo lve to b e co me a

le ve l 2 d ia g r a m wh e n fu r th e r a n a lysis is r e q u ir e d . Pr o g r e ssio n to le ve l 3 , 4 a n d so o n is p o ssib le b u t a n yth in g b e yo n d le ve l 3 is n o t ve r y

co mmo n . Ple a se b e a r in min d th a t th e le ve l o f d e ta il a ske d fo r d e p e n d s o n yo u r p r o ce ss ch a n g e p la n .

Diagram Notations

No w we 'd like to b r ie fly in tr o d u ce to yo u a fe w d ia g r a m n o ta tio n s wh ich yo u 'll se e in th e tu to r ia l b e lo w.

External Entity

An e xte r n a l e n tity ca n r e p r e se n t a h u ma n , syste m o r su b syste m. It is wh e r e ce r ta in d a ta co me s fr o m o r g o e s to . It is e xte r n a l to th e syste m

we stu d y, in te r ms o f th e b u sin e ss p r o ce ss. Fo r th is r e a so n , p e o p le u se d to d r a w e xte r n a l e n titie s o n th e e d g e o f a d ia g r a m.

Process

A p r o ce ss is a b u sin e ss a ctivity o r fu n ctio n wh e r e th e ma n ip u la tio n a n d tr a n sfo r ma tio n o f d a ta ta ke s p la ce . A p r o ce ss ca n b e d e co mp o se d

to fin e r le ve l o f d e ta ils, fo r r e p r e se n tin g h o w d a ta is b e in g p r o ce sse d with in th e p r o ce ss.

Data Store

A d a ta sto r e r e p r e se n t s th e sto r a g e o f p e r siste n t d a ta r e q u ir e d a n d /o r p r o d u ce d b y th e p r o ce ss. He r e a r e so me e xa mp le s o f d a ta sto r e s:

me mb e r sh ip fo r ms, d a ta b a se ta b le , e tc.

Data Flow

A d a ta flo w r e p r e se n t s th e flo w o f in fo r ma tio n , with its d ir e ctio n r e p r e se n te d b y a n a r r o w h e a d th a t sh o ws a t th e e n d ( s) o f flo w co n n e cto r .

U s e r R a t i n g : / 295

J a n u a r y 2 7 , 2 0 1 2

V i e w s : 6 2 5 , 9 3 2

PDF L i n k Ad d co m me n ts

E d i t i o n : S t a n d a r d o r a b o v e (E d i t i o n c o m p a r i s o n )

S h a r e Tweet 0 15 S e l e ct L a n g u ag e ▼115

http://www.visual-paradigm.com/staytuned/http://www.visual-paradigm.com/learning/http://en.wikipedia.org/wiki/Business_process_reengineeringhttp://-/?-http://www.visual-paradigm.com/features/http://www.visual-paradigm.com/shop/vp.jsphttp://void%280%29/http://www.visual-paradigm.com/download/http://www.visual-paradigm.com/whats-new/http://en.wikipedia.org/wiki/Data_flow_diagramhttp://www.visual-paradigm.com/http://www.visual-paradigm.com/support/http://www.visual-paradigm.com/staytuned/#vp_user_guide_632http://www.visual-paradigm.com/editions/http://www.visual-paradigm.com/editions/standard.jsphttp://www.visual-paradigm.com/tutorials/data-flow-diagram-dfd.jsp?format=pdf


2/13



What will we do in this tutorial?

In th is tu to r ia l we will sh o w yo u h o w to d r a w a co n te xt d ia g r a m, a lo n g with a le ve l 1 d ia g r a m.

Note: Th e so ftwa r e we a r e u sin g h e r e isVisu a l Pa r a d ig m Sta n d a r d Ed itio n. Yo u a r e we lco me to d o wn lo a d a free 30-day e va lu a tio n co p y o f

Visu a l Pa r a d ig m to wa lk th r o u g h th e e xa mp le b e lo w. No r e g istr a tio n , e ma il a d d r e ss o r o b lig a tio n is r e q u ir e d .

Steps to Draw a Context Diagram

1 . To cr e a te n e w DFD, se le ct Diagram > New fr o m th e to o lb a r . In th e Ne w Dia g r a m win d o w, se le ctBusiness Modelling > Data Flow

Diagram. Click OK to co n fir m.

2 . To r e n a me th e n e w d ia g r a m, r ig h t click o n th e b a ckg r o u n d a n d se le ct Rename.... I n t h e d i a g r a m ' s n a m e b o x ( a t t h e t o p l e f t c o r n e r ) ,

e n t e r Context a n d p r e s sENTER.

3 . W e ' l l n o w d r a w t he f i r s t p r o c e s s . F r o m t h e D i a g r a m T o o l ba r , d r a g Process o n to th e d ia g r a m. Na me th e n e w p r o ce ssSystem.

4 . Ne xt, le t's cr e a te a n e xte r n a l e n tity. Pla ce yo u r mo u se p o in te r o ve r System. Dr a g th e r e so u r ce ico n Bidirectional Data Flow -->

External Entity to th e le ft a n d r e le a se yo u r mo u se to cr e a te o n e .

http://www.visual-paradigm.com/download/http://www.visual-paradigm.com/product/vpuml/features/?edition=se


3/13



5 . Na me th e n e w e xte r n a l e n tity Customer .

6 . No w we 'll mo d e l th e d a ta b a se a cce sse d b y th e syste m. Ag a in , p la ce yo u r mo u se p o in te r o ve r System b u t th is time d r a g a d iffe r e n tr e so u r ce ico n ca lle d Bidirectional Data Flow --> Data Store t o t h e r i g h t . T h e n r e l e a s e y o u r m o u s e t o c r e a t e a n e w d a t a s t o r e .

7 . Na me th e n e w d a ta sto r e Inventory .

8 . Cr e a te two mo r e d a ta sto r e s, Customer a n dTransaction, a s sh o wn b e lo w. We h a ve ju st co mp le te d th e Co n te xt d ia g r a m.

Steps to Draw a Level 1 DFD

1 . In ste a d o f cr e a tin g a n o th e r d ia g r a m fr o m scr a tch , we will d e co mp o se th e System p r o ce ss to fo r m a n e w DFD. Rig h t click o n System

a n d se le ct Decompose f r o m t h e p o p u p m e n u .

2 . Th e d a ta sto r e s a n d /o r e xte r n a l e n titie s co n n e cte d to th e se le cte d p r o ce ss (System) wo u ld b e r e fe r r e d to in th e le ve l 1 DFD. So wh e n

yo u a r e p r o mp te d to a d d th e m to th e n e w d ia g r a m, click Yes t o c o n f i r m .


4/13



Note: Th e n e w DFD sh o u ld lo o k ve r y simila r to th e Co n te xt d ia g r a m in itia lly. Eve r y e le me n t sh o u ld r e ma in u n ch a n g e d , e xce p t th a t th e

System p r o ce ss ( fr o m wh ich th is n e w DFD d e co mp o se s) is n o w g o n e a n d r e p la ce d b y a b la n k sp a ce ( to b e e la b o r a te d ) .

3 . Re n a me th e n e w DFD. Rig h t click o n its b a ckg r o u n d a n d se le ct Rename.... I n t h e d i a g r a m ' s n a m e b o x , e n t e r Level 1 DFD a n d p r e ss

ENTER.

4 . Cr e a te th r e e p r o ce sse s ( Pr o ce ss O r d e r , Sh ip G o o d , Issu e Re ce ip t) in ce n te r a s sh o wn b e lo w. Th a t is th e o ld sp o t fo r th e System

p r o ce ss a n d we p la ce th e m th e r e to e la b o r a te System.

Wiring with connection lines for data flows

Th e r e ma in in g ste p s ( 6 - 1 6 ) in th is se ctio n a r e a b o u t co n n e ctin g th e mo d e l e le me n ts in th e d ia g r a m. Fo r e xa mp le , Customer p r o vid e s

o r d e r in fo r ma tio n wh e n p la cin g a n o r d e r fo r p r o ce ssin g .

1 . Pla ce yo u r mo u se p o in te r o ve r Customer . D r a g t h e r e s o u r c e i c o n Data Flow --> Process to th e r ig h t a n d d r o p it o ve rProcess Order .

2 . Afte r d r o p p in g th e d a ta flo w o ve r Process Order , a te xt b o x n e a r th e co n n e ctio n lin e will o p e n fo r yo u to p u t a la b e l in . En te r order

information a n d p r e ssENTER.

3 . Me a n wh ile th e Process Order p r o ce ss a lso r e ce ive s cu sto me r in fo r ma tio n fr o m th e d a ta b a se in o r d e r to p r o ce ss th e o r d e r .

Pla ce yo u r mo u se p o in te r o ve r th e Customer d a ta sto r e . Dr a g th e r e so u r ce ico nData Flow --> Process to th e le ft a n d d r o p it o ve r

Process Order .


5/13



Optional: Yo u ca n la b e l th e d a ta flo w "cu sto me r in fo r ma tio n " if yo u like . Bu t sin ce th is d a ta flo w is q u ite se lf- e xp la n a to r y visu a lly, we a r e

g o in g to o mit it h e r e .

4 . By co mb in in g th e o r d e r in fo r ma tio n fr o m Customer ( e x t e r n a l e n t i t y ) a n d t h e c u s t o m e r i n f o r m a t i o n f r o mCustomer ( d a t a s t o r e ) ,Process

Order ( p r o c e s s ) t h e n c r e a t e s a t r a n s a c t i o n r e c o r d i n t h e d a t a b a s e .

Pla ce yo u r mo u se p o in te r o ve r Process Order . D r a g t h e r e s o u r c e i c o n Data Flow --> Data Store to th e r ig h t a n d d r o p it o ve r

Transaction. Na me th e d a ta flo w order details.

Drawing Tips:

To r e a r r a n g e a co n n e ctio n lin e , p la ce yo u r mo u se p o in te r o ve r wh e r e yo u wa n t to a d d a p ivo t p o in t to it. Yo u 'll th e n se e a b u b b le a t yo u r

mo u se p o in t. Click a n d d r a g it to wh e r e yo u n e e d .

Up to th is p o in t, yo u r d ia g r a m sh o u ld lo o k so me th in g like th is.


6/13



5 . O n ce a tr a n sa ctio n is sto r e d , th e sh ip p in g p r o ce ss fo llo ws. So we will n o w cr e a te a d a ta flo w fr o m Process Order ( p r o c e s s ) t oShip

Good ( p r o c e s s ) .

Pla ce yo u r mo u se p o in te r o ve r Process Order . D r a g t h e r e s o u r c e i c o n Data Flow --> Process d o wn wa r d s a n d d r o p it o ve r toShip

Good.

6 . Ship Good n e e d s to r e a d th e tr a n sa ctio n in fo r ma tio n ( i.e . th e o r d e r ) in o r d e r to p a ck th e r ig h t p r o d u ct fo r d e live r y. So we 'll cr e a te a d a ta

f l o w f r o m Transaction ( d a t a s t o r e ) t oShip Good ( p r o c e s s ) .

Note: If th e r e is a la ck o f sp a ce , fe e l fr e e to mo ve th e sh a p e s a r o u n d to ma ke r o o m.

7 . Ship Good a lso n e e d s to r e a d th e cu sto me r in fo r ma tio n fo r h is/h e r sh ip p in g a d d r e ss.

S o l e t ' s c r e a t e a d a t a f l o w f r o m Customer ( d a t a s t o r e ) t oShip Good ( p r o c e s s ) .

8 . Ship Good th e n u p d a te s th e In ve n to r y d a ta b a se to r e fle ct th e g o o d s sh ip p e d .

So we 'll cr e a te a d a ta flo w fr o m Ship Good ( p r o c e s s ) t oInventory ( d a t a s t o r e ) . N a m e i tupdated product record .


7/13



9 . O n c e t h e o r d e r a r r i v e s i n t h e c u s to m e r ' s h a n d s , t h e Issue Receipt p r o ce ss b e g in s. In it, a r e ce ip t is p r e p a r e d b a se d o n th e tr a n sa ctio n

r e co r d sto r e d in th e d a ta b a se . So le t's cr e a te a d a ta flo w fr o m Transaction ( d a t a s t o r e ) t oIssue Receipt ( p r o c e s s ) .

1 0 . Th e n a r e ce ip t is issu e d to th e cu sto me r . L e t's cr e a te a d a ta flo w fr o m Issue Receipt ( p r o c e s s ) t oCustomer ( e x t e r n a l e n t i t y ) .

Pla ce yo u r mo u se p o in te r o ve r Issue Receipt. Dr a g th e r e so u r ce ico n Data Flow --> External Entity to th e le ft a n d d r o p it o ve r

Customer ( th e e xte r n a l e n tity, n o t th e d a ta sto r e ) . Na me th e d a ta flo w receipt .

Yo u h a ve ju st fin ish e d d r a win g th e le ve l 1 d ia g r a m wh ich sh o u ld lo o k so me th in g like th is.

Steps to Make the Level 1 Diagram Easier to Read

Th e co mp le te d d ia g r a m a b o ve lo o ks a b it r ig id a n d b u sy. In th is se ctio n we a r e g o in g to ma ke so me ch a n g e s to th e co n n e cto r s to in cr e a se


8/13



I n t e r e s t e d i n p r o d u c i n g a p r o f e s s i o n a l D F D r e p o r t ? T r y t h e r e p o r t g e n e r a t i o n t o o l .

Collect the keywor ds fr om pr ocess, entity, data stor e and flow nam es. F or m a glossar y.

Annotate your design with fr eehand shape.

I n t e r e s t i n m o d e l i n g b u s i n e s s p r o c e s s e s ? C h e c k o u t o u r B P M N s u p p o r t h e r e .

D e s c r i p t i o n : W a n n a k n o w m o r e a b o u t t h e c o n c e p t o f l e v e l e d D F D ? R e a d t h i s t u t o r i a l .

r e a d a b ility.

1 . Rig h t click o n th e d ia g r a m ( L e ve l 1 DFD) a n d se le ct Connectors > Curve. Co n n e cto r s in th e d ia g r a m a r e n o w in cu r ve lin e s.

2 . Mo ve th e sh a p e s a r o u n d so th a t th e d ia g r a m lo o ks le ss cr o wd e d .

Resources

O r d e r - Pr o ce ssin g .vp p

O r d e r - Pr o ce ssin g _ r e su lt.vp p

Something more...

Re p o r tin g in se co n d s

De fin e ke y p r o je ct vo ca b u la r ie s

Ea sy d ia g r a mmin g | An n o ta tin g d ia g r a m

Tu to r ia l - In tr o d u ctio n to BPMN Pa r t I

Tu to r ia l - Dr a win g L e ve le d Da ta Flo w Dia g r a ms

Rate this Article

Click on one of the star s below to r ate this ar ticle fr om 1 ( lowest) to 5 ( highest) .

Bad Good

http://www.visual-paradigm.com/product/vp/provides/diagramtools.jsp#annotatinghttp://d1dlalugb0z2hd.cloudfront.net/lz/tutorials/dfd_screenshots/20120127/resources/Order-Processing_result.vpphttp://d1dlalugb0z2hd.cloudfront.net/lz/tutorials/dfd_screenshots/20120127/resources/Order-Processing.vpphttp://www.visual-paradigm.com/product/vp/provides/docgen.jsphttp://www.visual-paradigm.com/tutorials/bpmn1.jsphttp://www.visual-paradigm.com/tutorials/leveleddfd.jsphttp://www.visual-paradigm.com/product/vp/provides/glossary.jsp


9/13



T a g g e d : u s e c a s e, flow of events

T a g g e d : PostM ania

T a g g e d : ERD

T a g g e d : p a c k a g e d i a g r a m, UM L

T a g g e d : N e t B e a n s, c o d e e n g i n e e r i n g, i d e i n t e g r a t i o n

Ta g s o f th is a r ticle : d a ta flo w d ia g r a m, DFD, b u sin e ss p r o ce ss mo d e lin g

You may be interested in

Wr itin g Effe ctive Use Ca se

Sh a r e De sig n , Discu ss De sig n with Po stMa n ia

Dr a w En tity Re la tio n sh ip Dia g r a m ( ERD)

Ho w to O r g a n ize Dia g r a ms with Pa cka g e ?

Pe r fo r m UML Mo d e lin g in Ne tBe a n s

Comments (44)

written by Coilnd77 on October 12, 2011

I can' t find this ' Or der - Pr ocessing.vpp ' file needed to go thr ough this tutor ial. Wher e is it? T he file at

t h e b o t t o m o f t h e p a g e i s a l i n k t o a w e b p a g e . I d o n ' t t h i n k y o u h a v e p u t i t i n a p l a c e p e o p l e c a n f i n d

v e r y e a s y ( a c c e s s i b i l i t y )

written by Jick Yeung on October 12, 2011

H i C o i l n d 7 7 ,

T o get the pr oject, please r ight click on the link ( e.g. Or der - Pr ocessing.vpp) and select "Save Link

As...". T he file saved is a .vpp which can be opene d by BP- VA.

written by Colin on October 12, 2011

T hanks for the help Jick, all the best.

written by eduardo on February 4, 2012

F ir st tim e using the softwar e for DF D. Excellent tutor ial. At fir st, it took m e a few m inutes to or ient

m yself with the m enu or ganization ( m any options listed at the beginning) . Going step- by- step withthe tutor ial is sufficient to go solo.

T h a n k y o u !

written by raisoni college on March 31, 2012

it is ver y easy to under stand..thanx!!!!!!!!!!!

written by sowmya on April 27, 2012

i f w e h a v e 2 d a t a f l o w i n g a m o n g e n t i t i e s l i k e u s e r n a m e a n d p a s s w o r d t h e n h o w w e w i l l r e p r e s e n t

o n t h e d i r e c t e d a r r o w ? ?

c a n w e u s e " + " s y m b o l l i k e u s e r n a m e + p a s s w o r d ? ?

written by Jick Yeung (VP) on May 2, 2012

H i s o w m y a ,

Y o u c a n c r e a t e m u l t i p l e c o n n e c t o r s a m o n g e n t i t i e s , o n e f o r u s e r n a m e a n d a n o t h e r f o r p a s s w o r d .

written by sowmya on May 4, 2012

thank u..

written by smsmbek on October 12, 2012

t h a n x b u t i w a n t t o k n o w i f w e c a n w r i t e a r a b i c l a n g a u g e i n t h i s s o f t w a r e y o u r e c o m e n d e d o r n o t p l za n s w e r m e

written by Jick Yeung (VP) on October 12, 2012

Hi sm sm bek,

http://www.visual-paradigm.com/tutorials/?tag=postmaniahttp://www.visual-paradigm.com/tutorials/vptspostmania.jsphttp://www.visual-paradigm.com/tutorials/?tag=use_casehttp://www.visual-paradigm.com/tutorials/?tag=netbeanshttp://www.visual-paradigm.com/tutorials/?tag=data_flow_diagramhttp://www.visual-paradigm.com/tutorials/?tag=package_diagramhttp://www.visual-paradigm.com/tutorials/?tag=flow_of_eventshttp://www.visual-paradigm.com/tutorials/erd.jsphttp://www.visual-paradigm.com/tutorials/?tag=umlhttp://www.visual-paradigm.com/tutorials/writingeffectiveusecase.jsphttp://www.visual-paradigm.com/tutorials/packagediagram.jsphttp://www.visual-paradigm.com/tutorials/?tag=erdhttp://www.visual-paradigm.com/tutorials/?tag=code_engineeringhttp://www.visual-paradigm.com/tutorials/?tag=business_process_modelinghttp://www.visual-paradigm.com/tutorials/?tag=ide_integrationhttp://www.visual-paradigm.com/tutorials/?tag=dfdhttp://www.visual-paradigm.com/tutorials/modelinginnetbeans.jsp


10/13



O u r t o o l s u p p o r t s a l l l a n g u a g e s , i n c l u d i n g A r a b i c l a n g u a g e .

J i c k

written by Djama on October 18, 2012

W h e n d e s i g n i n g t h e D F D , c a n y o u a d d t h e o t h e r E n t i t i e s a n d D a t a s t o r e s s u c h a s C u s t o m e r T y p e s ,

Sale T ypes, Paym ent T ypes ( in your exam ple)

written by Tahir Islam on October 19, 2012

c a n a n y o n e t e l l w h i c h s o f t w a r e i s u s e d i n a b o v e t u t o r i a l ? ? ? ? ?


H i T a h i r ,

T h e s o f t w a r e u s e d i n t h i s t u t o r i a l i s B P V i s u a l A R C H I T E C T

http://www.visual- par adigm .com /pr oduct/bpva/

It suppor ts DF D, BPM N, EPC, glossar y, r epor ting and m or e. Checkout the above hyper link for m or e

d e t a i l s .

written by Dhanapal.IPS on February 14, 2013

T h a n k s f o r t h e h e l p , k e e p i t u p ,

written by mangesh h. on March 5, 2013

its a ver y easy language in dfd. thanks......

written by prisca on July 4, 2013

thats tr ick bt under standar ble

written by dfd ror jewelry making system plz on August 1, 2013

g o o d e x a m p l e

written by Jick Yeung (VP) on August 16, 2013

H i m a h u a ,

T h a n k y o u f o r y o u r p o s t . C o u l d y o u a p p l y t h e s k i l l s w r i t t e n i n t h e t u t o r i a l t o d r a w t h e d a t a f l o w

d i a g r a m y o u w a n t ? I f y o u f i n d a n y t h i n g u n c l e a r , p l e a s e f e e l f r e e t o p o s t a g a i n .

written by Par on August 16, 2013

H i , h o w c a n I u s e t h e D a t a F l o w d i a g r a m i n w o r d f o r m a t w i t h o u t h a v i n g a b a c k g r o u n d c o n t a i n i n g

L o g i z i a n t e x t ?

written by Jick Yeung (VP) on August 19, 2013

H i P a r ,

T hank you for your post. T he water m ar k will be r em oved in pur chased copy.

written by Naina khandelwal on September 21, 2013

plz send m e the all types of DF D diagr am for m ail pr ocessing system ......plzzzzzzzzzzzzzz

written by Jick Yeung (VP) on September 24, 2013

h i N a i n a ,

Regr etfully we do not have any DF D sam ple for m ail pr ocessing system . But I think that you can

d r a w i t y o u r s e l f e a s i l y w i t h o u r L o g i z i a n .


11/13



written by Pearl Anne Mae Biong on October 13, 2013

T his exam ple is good as a guide as I star t on diagr am s. But, can you please send m e a context

diagr am and data flow diagr am for a point- of- sale and inventor y system ? T hanks! :)


H i A n n e M a e B i o n g ,

R e g r e t f u l l y w e d o n o t h a v e a n y D F D s a m p l e f o r t h e c a s e y o u d e s c r i b e d . B u t I b e l i e v e t h a t y o u c a n

d r a w t h e D F D y o u r s e l f e a s i l y w i t h L o g i z i a n . I f y o u h a v e a n y q u e s t i o n s p l e a s e f e e l f r e e t o c o n t a c t o u r

suppor t team for assistance.

written by Chamath Elapatha on October 24, 2013

T hanks a lot for helping m e.... ^_^

written by Arsalan on November 11, 2013

h i , c a n a n y o n e s h o w m e a d a t a f l o w d i a g r a m f o r s c h o o l - i n E n g l a n d p l z i t s f o r I C T , a c o n t e x t a n d

l e v e l 0

written by sunny on December 10, 2013

it help m e a lot .... thx

written by sunny on December 10, 2013

it help m e a lot .... thx

written by sneha on January 2, 2014

confused

written by kanchana on February 17, 2014

i t h e l p e d

written by natasha on March 19, 2014

i m nt gettint that wher e is that business wr itten in the toolbar s at the top?

written by Haro on March 28, 2014

Accor ding to the r ules of a DF D, a pr ocess m ust have input and output str eam s, then to decom po se

o r e x p l o d e a p r o c e s s , h o w c a n I k e e p t h e d a t a f l o w s i n a n d o u t i n t h e d i a g r a m , i f t h e p a r e n t p r o c e s s

h a s n o r e l a t i o n t o a d a t a s t o r e o r a n e x t e r n a l e n t i t y .

Exam ple: I have a par ent pr ocess at Level 1 M ANAGING PRODUCT and for that I need the input

data str eam s and NAM E and QUANT IT Y PRODUCT REPORT output which is gener ated and sent

to other pr ocesses. At Level 2, the br eak M ANAGING PRODUCT S, inputs and outputs m ust per sist.

H o w e v e r , I c a n n o t f i n d h o w t o d o i t i n t h e V i s u a l P a r a d i g m . I k n o w h o w t o d o w h e n t h e y c o m e o r g o

t o d a t a s t o r e e n t i t i e s , b u t n o t w h e n c o m i n g o r g o i n g t o p r o c e s s

written by khushboo darji on April 10, 2014

i want dfd for ar ticle r ewr ite tool...

written by Yemisrach on May 2, 2014

T h a n x i t i s g r e a t , a v e r y g o o d e x a m p l e i s s h o w n i n t h e a b o v e .


12/13



Dr a win g L e ve le d Da t a F lo w Dia g r a m s ( DF Ds) Be g in UM L M o d e lin g in Eclip se

H o me T u to r ia l s D a ta Flo w D ia g ra m (DFD ) Tu to ria l

written by Adeel Ahmed on May 22, 2014

T his is the best and ver y illustr ative dfd. It has alm ost ever ything for the beginner s

written by Chadwick on July 1, 2014

W o u l d b e g r e a t i f y o u c o u l d j u s t d r a g i n t h e p r o c e s s e s o r s u b p r o c e s s e s f r o m B P M N , o r t h e o t h e r

w a y r o u n d - u s e a D F D a s a h i g h - l e v e l s t a r t i n g p o i n t t o i n d e x m o r e d e t a i l e d f l o w c h a r t s t h a t s h o w t h e

s e q u e n c e o f e v e n t s . E v e n b e t t e r i f ' e x p l o d i n g ' a p r i c e s t o t h e n e x t l e v e l r e t a i n e d a l l t h e f l o w a r r o w sinto and out of the new sur r ounding ' context' box, as stubs to connect to new m or e detailed

s u b p r o c e s s e n t r i e s w i t h i n t h e n e w c o n t e x t . L i k e o t h e r e n t e r p r i s e m o d e l l e r s I c o u l d m e n t i o n !

written by Chadwick on July 1, 2014

W o u l d b e g r e a t i f y o u c o u l d j u s t d r a g i n t h e p r o c e s s e s o r s u b p r o c e s s e s f r o m B P M N , o r t h e o t h e r

w a y r o u n d - u s e a D F D a s a h i g h - l e v e l s t a r t i n g p o i n t t o i n d e x m o r e d e t a i l e d f l o w c h a r t s t h a t s h o w t h e

s e q u e n c e o f e v e n t s . E v e n b e t t e r i f ' e x p l o d i n g ' a p r i c e s t o t h e n e x t l e v e l r e t a i n e d a l l t h e f l o w a r r o w s

into and out of the new sur r ounding ' context' box, as stubs to connect to new m or e detailed

s u b p r o c e s s e n t r i e s w i t h i n t h e n e w c o n t e x t . L i k e o t h e r e n t e r p r i s e m o d e l l e r s I c o u l d m e n t i o n !

written by Angus Chan on July 2, 2014

T h a n k y o u f o r y o u r c o m m e n t . I w i l l f o l l o w u p w i t h o u r t e a m t o s e e h o w w e c a n i m p r o v e .

written by Singh on August 10, 2014

b e m o r e e a s i e r i f y o u h a v e g o n e t h u r o g h o u r p r e v i o u s t u t o r i a l s o n i s s u i n g b o o k s o u t o f l i b r a r y a n d

r etur ning books to libr ar y. Such, functions in a Libr ar y M anagem ent System Softwar e pr oject

d e s c r i b e s h o w t h e c o n t r o l f l o w o f

written by sree on August 25, 2014

it' s ver y useful

written by gopal on September 18, 2014

sir i am needed the m ater ial m anagem ent data flow so please tell m e that how can i dr aw ......

written by kishor ramani on October 15, 2014

m y q u e s t i o n s i s t h a t t h e h o w c a n i d r a w a 2 l e v e l D F D a n d 3 l e v e l D F D d i a g r a m f o r t h e a n o t h e r

system .

a n d i t i s v e r y c o m p l e x t o d r a w t h i s d i a g r a m .

a n d m y a c t u a l q u e s t i o n i s

w h e n w e d r a w a 2 l e v e l d i a g r a m a t t h a t t i m e w e s h o u l d r e m a i n s a m e 0 o r 1 l e v e l d i a g r a m i n t h e 2

l e v e l D F D d i a g r a m ?

written by Laurens on December 16, 2014

W o u l d y o u s e e a n E R P s y s t e m a s a p r o c e s o r a s a d a t a s t o r e ? O r c o u l d i t b e b o t h ?

written by brenda on January 7, 2015

gr eat job.. i enjoy r eading a I have a lot of things get her e :)

Write comment

http://www.visual-paradigm.com/tutorials/leveled-dfd.jsphttp://www.visual-paradigm.com/http://www.visual-paradigm.com/tutorials/eclipseuml.jsphttp://www.visual-paradigm.com/tutorials/


13/13


A ll right s reserv ed. Legal Pr iv ac y s t atement Site map Hot News (RS S )

About us

Awar ds

U s e r s L i s t

T estim onials

R e s e l l e r P a r t n e r s

Academ ic Par tner s

WHAT'S NEW

FEATURES

TUTORIALS

SUPPORT

BUY

DOWNLOAD

SOLUTIONS

CONTACT US
http://www.visual-paradigm.com/partner/academic/http://www.visual-paradigm.com/whats-new/http://www.visual-paradigm.com/aboutus/http://www.visual-paradigm.com/support/http://www.visual-paradigm.com/tutorials/http://www.visual-paradigm.com/http://www.visual-paradigm.com/partner/reseller/http://www.visual-paradigm.com/aboutus/userlist.jsphttp://www.visual-paradigm.com/download/http://www.visual-paradigm.com/features/http://www.visual-paradigm.com/aboutus/contactus.jsphttp://www.visual-paradigm.com/aboutus/testimonials.jsphttp://www.visual-paradigm.com/aboutus/privacy.jsphttp://www.visual-paradigm.com/aboutus/legal.jsphttp://www.visual-paradigm.com/aboutus/sitemap.jsphttp://www.visual-paradigm.com/shop/vp.jsphttp://www.visual-paradigm.com/rss/hotnews.rsshttp://www.visual-paradigm.com/solution/http://www.visual-paradigm.com/aboutus/award/

Documents

Tutorial on How to Draw a Data Flow Diagram (DFD)