DFD KYA HAI?( WHAT IS DFD?)

WHAT IS DFD(DFD KYA HAI?)?

DATA FLOW EK GRAPHICALLY REPRESENTATION

HAI KI DATA KAISE AA RHA HAI KHA SE AA RHA HAI AUR KE JAKE

STORE HOGA.

DIKHIYE HUM JB KOI WEBSITE BANATE HAI ,

SOFTWARE BANATE HAI, SYSTEM DESIGN KRTE

HAI TOH SOCHO USME KYA  MATTER KARTA

HAI,AAP FACEBOOK KE BARE ME SOCHO

FLIPKART QUICKER JO BHI HAI TO USME

KYA MATTER KRTA HAI .YE MATTER NI KRTA

HAI  KI AAPKA SOFTWARE KAISA HAI KAISA

DIKHEGA HAI ESME MATTER YE KRTA HAI KI DATA,

DATA SABSE BADI CHEEZ HAI

DATA KAISE USE HO RHA HAI DATA KAISE FLOW KR RHA HAI

APNE SYSTEM ME DATA KIS TARAH SE FLOW KR

RHA HAI.

DATA EK PROCESS SE DUSRE PROCESS

ME DATA KAISE JA RHA HAI .DATA

KAHA SE AA RHA HAI AUR KHA PE JAYEGA

AUR KAISE AUR KHA PE STORE HOGA YE SB

DFD KE THROUGH PTA CHALTA HAI

DFD shows how data enter a system, are transformed in that system, and how it is stored in iT

( STARTING KRNE SE PHLE AAP KO BTA DENA

CHAHTA HUN KI SBKA

DFD ALAG ALAG HOTA HAI ,

YE NI KI AAPKE DOST NE BANAYA ALG

AUR AAPNE ALAG TOH YE NI SOCHNE KI

AAPNE AISA BANAYA USNE AISA BANAYA  KYUNKI AAP KI

THINKING ALAG HA USKI ALAG TOH YE MT SOCHNA KI

AAP GALAT HAI USKA ALAG BUS AAPKO

KUCH CHEEZO KO DYAN ME DENA HAI PHIR AAP

UN CHEEZO KO DYAN ME RAKH KR AUR THIK TARAH SE USE KRKE

DFD BANATE HAI TOH AAPKA

DATA FLOW EKDAM SE PERFECT HOGA)

 

COMPONENT USE IN DFD

1-PROCESS->

YE BATATA HAI KI AAPKA KYA FUNCTION YA

OPERATION HO RHA HAI  AAPKE SYSTEM ME.

AUR YE

DATA KO EK FORM SE DUSRE FORM ME

CONVERT KARTA HAI.

2.EXTERNAL ENTITY

EXTERNAL ENTITY ME HUM EXTERNAL ENTITY  BATATE HAI

ESME EXTERNAL ENTEITY KA  NAME DETE HAI.

TOH  AB EXTERNAL ENTITY  KYA HO SKTA  HAI?

EXTERNAL ENTITY WO HAI JO PROCESS ME

AAPKO DATA PROVIDE KAR RHA HAI. WHI

EXTERNAL ENTITY HAI.

JAISE KI KOI CUSTOMER ONLINE SHOPPING KE

LIYE  EXTERNAL ENTITY HAI BECAUSE WO DATA PROVIDE KR RHA HAI AAPKE SOFTWARE ME

JAISE KI ADMIN EK EXTERNAL ENTITY HAI ,

BANK AAPKE LIYE SYSTEM BNA RHA HAI

WHA PE BANK INVOLVE HAI, JAISE KI BANK

AUTHENTICATE KRNE WALA HAI USME BANK EK EXTERNAL ENTITY HOGA .

AB AAP SOCHO JAISE KI  KOI PERSON

FACEBOOK PE LOGIN KR RHA HAI AUR

FACEBOOK AAPKO LOGIN PROVIDE KR

RHA HAI MTLB AAPKO DATA PROVIDE KR

RHA HAI TOH FACEBOOK EXTERNAL ENTITY HAI.

ANTHING THOSE WHO PROVIDE A 

DATA TO YOU CALLED AS EXTERNAL ENTITIY.

3 DATA FLOW

ESME DATA KE MOVEMENT KO DIKHATA HAI

ESME ARROW SYMBOL SE SHOW KRTE HAI KI

DATA KHA SE KHA PE MOVE KR RHA HAI

4->DATA STORE

YHA PE HUM DATA KO STORE KRTE HAI.

ESKO HUM RECTAGLE KE THROUGH SHOW

KRTE HAI.JISKI EK SIDE NAHI HOTI HAI

YA DONO SIDE NAHI HOTI HAI.

 

 

WHERE WE USE DFD(kha pe dfd use krenge)

aapko pta hi hoga ki dfd kitna important  hai computer

field me jab aap kisi project pe kaam kar rhe ho

toh aur hum iss topic me esi bat pe discussion krenge

ki df kha kha pe use hota hai

DOSTO DFD KA USE HUM JAB KOI

PROJECT BANATE HAI JAISE KI KOI MINI

PROJECT BANATE HAI THIK AISE HI AGAR KOI BDA PROJECT BANATE HAI

YA PHIR KOI SYSTEM DESIGN ,SOFYWARE DEVELOPE

KARTE HAI TOH HUM WHA PE

DFD KO USE KRKE WHA PE DATA

KE FLOW KO DIAGRAMATICALLY BATATE

HAI

 

 

 

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