The document discusses Microsoft Visio, a diagramming software program. It provides information on Visio's history and editions. The standard and professional editions share the same interface but the professional edition has additional templates and functionality. The document also discusses how to open a Visio drawing and the types of data flow diagrams that can be created, including physical and logical diagrams. It describes the common symbols used in data flow diagrams such as sources, sinks, processes, data stores, and data flow lines.

1. Shree Manibhai Virani and Smt. Navalben Virani Science
College, Rajkot
(Autonomous)
Affiliated to Saurashtra University, Rajkot
Ms.Ripal Ranpara
Assistant Professor,
Department of Computer Science & Information Technology
Shree M.N. Virani Science College Rajkot

2. Visio helps in drawing and
diagramming program that helps to
transform concepts(system) into a
visual representation.

3.  The first version Of microsoft
visio was the 2002 version.
 Visio 2007 was relesed on november
30,2006 by Microsoft
 Microsoft Corporation Bought Visio
Corporation in 2000.

4. Visio
Edition
Standard Professional

5. The standard and proffesional editions of
microsoft visio share the same Interface,
but the professional edition has additional
templates for more advanceDiagram
and layouts as well as unique functionality
that make it easy for user to Diagram.

7. To open a new Visio drawing, go
to the Start Menu  select
Microsoft officeMicrosoft Visio

11. Physical Data Flow Diagram:
show how the current system flows
Logical Data Flow Diagrams –
show the data flow, structure, and
requirements of a new system

13. Data Flow Diagrams Symbols
Source/ Sink
Source/Sink – help to establish
the boundaries of the system. A
source identifies the origin of
data inflow to the system. A
sink identifies the outflow of a
system, many times as
information. Sometimes
referred to an entity, a source
may be a customer, vendor,
employee, or even another
system. A single entity can be
both a source and a sink.

14. Data Flow Diagrams Symbols
0.0
Process
DeMarco & Yourdon
Processes – are the activities
(manual and automated) that
transform the inputs, transport
data from process to process,
stores the data, and produce
the outputs of a system.
Processes are used on every
DFD starting with an over all
process on the context level
diagram, the system.

15. Data Flow Diagrams Symbols
DeMarco & Yourdon
Data Store – is the resting place
of the data in a system. A data
store can be in the form of paper,
a disk file or any other media.
Normally the word ‘data’ does not
appear in the title of a data store.
Some examples of data stores are
Customer Order, Payment,
Invoice, Time Card……
DATA STORE

16. Data Flow Diagrams Symbols
Data Flow Lines
DeMarco & Yourdon
Data Flow – is the data in motion.
Data can move from the outside
(source) into a process. Once the
inside of a system data must flow
from place to place through a
process, the flow lines show this
movement.
The lines are labeled to provide
clarity and meaning to the data
moving through the system.