Sponsored Links
This presentation is the property of its rightful owner.
1 / 41

ΔΙΑΓΡΑΜΜΑΤΑ ΡΟΗΣ ΔΕΔΟΜΕΝΩΝ PowerPoint PPT Presentation


  • 230 Views
  • Uploaded on
  • Presentation posted in: General

ΔΙΑΓΡΑΜΜΑΤΑ ΡΟΗΣ ΔΕΔΟΜΕΝΩΝ. Δαμιανός Χατζηαντωνίου Οικονομικό Πανεπιστήμιο Αθηνών. Δημιουργία Διαγραμμάτων Ροής. Για τη δημιουργία Διαγραμμάτων Ροής Δεδομένων (ΔΡΔ) πρέπει να γνωρίζουμε αρχικά : τον τρόπο λειτουργία της υποψήφιας εταιρείας

Download Presentation

ΔΙΑΓΡΑΜΜΑΤΑ ΡΟΗΣ ΔΕΔΟΜΕΝΩΝ

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript



  • () :

    • ,

  • - , - .

  • (top-down) .


  • (entity)

  • (flow of data)

  • (process)

  • (data store)

2.1

1


Context Diagram


Child Diagrams




-


1 . . . .


D1

Prices

1

identify

item

2

look up

prices

3

compute

total cost

4

payment

&receipt

Customer

Customer

Prices

Items to

Purchase

Payment

Receipt

Amount to

be paid

Item ID

Items&

Prices


. , .


D1

COST OF TOUR

1

check

credit

3

make

reservations

D2

TRAVEL BROCHURES

AIRLINE

TRAVEL

AGENT

TOURIST

TOURIST

WITH

CHARGE

CARD

PRIVATE

TRAVEL

AGENT

CASH

PAYING

TOURIST

2

determine

tour

desired

D3

D4

TRAVEL ITENARY

CREDIT HISTORY

. 9.EX1:


D1

COST OF TOUR

1

check

credit

4

make

reservations

D2

TRAVEL BROCHURES

TOURIST

CASH

PAYING

TOURIST

AIRLINE

TRAVEL

AGENT

TOURIST

WITH

CHARGE

CARD

PRIVATE

TRAVEL

AGENT

2

determine

tour

desired

D3

D4

CREDIT HISTORY

TRAVEL ITENARY

cc#

prices

approval

cc#

tour accepted

program

cc#

profile

confirmation

. 9.EX1:


  • /

  • = /

  • / ,


D1

Prices

1

identify

item

2

look up

prices

3

compute

total cost

4

payment

&receipt

Customer

Customer

Prices

Items to

Purchase

Payment

Receipt

Amount to

be paid

Item ID

Items&

Prices


D1

D1

Temp. Trans File

UPC Price File

1

pass items

over scanner

2

look up

code and

price in

file

3

compute

total cost

4

collect money

and

give

receipt

Customer

Customer

UPC Code

Item Description

and Prices

Items to

Purchase

Payment

Receipt

Amount to

be paid

UPC Bar

Code

Items&

Prices


1:

  • .

  • .

  • .

  • bonus ( ).


  • ( ) .

  • , , .

  • .

  • .

  • . . $50 , , bonus ( ) .

  • $250 , ( bonus ).


(context diagram).

.

, (CUSTOMER) .


context .



  • : ;

  • CASH TRANSACTION. ( ).

  • , (.. , ) RENTAL INFORMATION (MANAGEMENT REPORTS) (.. ) .

  • , , .

  • (child diagram) .


. 9.14: 1


. 9.15: 2


  • .

  • , .. VIDEO MASTER FILE, CASH TRANSACTION FILE, RENTAL TRANSACTION FILE.

  • (.. Rent Video Items, Check In Customer Video Return, Add New Customer) .

  • (.. Scan Customer Rental Card, Print Customer Rental Receipt).


. 9.16:


. 9.17:


  • .

  • .

  • / , , . .

  • , .

  • ( ) .


. 9.18:


2:

  • .

  • .

  • (, , ) / ( ).


  • (master file). .

  • .

  • . . .

  • . .

  • .

  • . .

  • .

  • (Accounts Receivable) .


  • .

  • .

  • CUSTOMER, ACCOUNTING , ACCOUNTING WAREHOUSE WAREHOUSE ACCOUNTS RECEIVABLE REPORT CUSTOMER BILLING STATEMENT .

  • ( 0) .


. 9.20:


. 9.21: -1


  • -0 -1.

  • .

  • -1 (.. 1, 1.1, 1.2,...).

  • , .

  • 1 & 2 ( ) .


. 9.22: -2


. 9.23: -2


. 9.24: ( -1)


-1 ( ) .

, .


1

-

4

5

2

3

-

D3

D4

D1

D1

D2

6


5.5

5.8

5.6

5.4

-

5.2

5.3

5.1

E

5.6

D1

D6

D7

D5

D7


  • Login