Answer / jay prakash

There are 2 types of Environment Variables in QTP:
1. User defined
2. Built In

The significance of environment variable is that the value
of environment parameters remains the same during the test
playback, regardles the number of iterations, unless you
change the value. The name of the built in environment
variable will be common across the test. Like UserName, OS
etc.
To see the list of env var you can go to File -> Setting ->
Environment Tab.

Please let me know in case more clarification is required.

Answer / murali

Environment variable can be used across any Action and any
test with in QTP. Since it is declared in QTP Environment
section

Global variable can be used with in a test and functions
associated to that test.

Answer / bfakruddin

Environment Variables and global variables are used for
similar purpose...

Environment Variables also have the global scope to access
in any test or action or Function...

Environment Variables: External Environment variables have
the global variables scope to use any where... They might
be stored in .xml file, .txt file or .ini files.. and use
where ever we want...

But... Internal Environment Variables can't be used with in
the different Tests... can be use with in several actions
in one Test.

I hope... you get understood... If not.. please let me know
here itself.

thanks & regards
Baba Fakruddin.D

Answer / medabalimi

Environment Variables:
As the name implies the Environment variables contain the
information related test environment and machine
environment.
Two types 1.Built-In and 2.User Defined. Though the Built-
in values seems to be constant they are actually variables,
the machine takes care of maintaining appropriate values.
Not editable directly by a user from QTP. Ofcourse the user
defined can be modified any time from QTP.
They are just Name & Value pairs and are of type string
data. Accessible globally in QTP tests. Example:
UserID="SomeName" Where Name="UserID" and Value="someName"

We can say the Environment variables are subset of Global
variables in one aspect. That means we can declare
variables with Name Value pairs of any type supported by
the script language. We have the advantage of defining
dimentional/hierachical data (multi dimentional arrays)
which is not possible with environment variables.

Answer / babu

Hi Reddy,

We can say Environment variables are the global variables
in QTP.
In QTP,as mentioned by Jayprakash we can use environment
variables in QTP.

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