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Session variables

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What is a Session variable? How can Session variables be used in an online Banking application?

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How can Session variables be used in an online Banking application?

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Please see the attached file.

Use Session variables when you need the variables for a single site visit or set of requests. For example, you might use Session variables to store a user's selections in a shopping cart application. (Use Client variables when you need the variable for future visits.)
You should limit using session variables by passing variables through the Query String and through Posted Forms.

As the web is stateless by nature, the problem ...

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