We are trying to come up with a strategy for data validation in our 
Flex application. Our current approach is to perform basic data 
validation (valid values for each field) on the client side and invoke 
server-side objects to perform more thorough validation such as 
relational edits(e.g. "if field x > 100, field y must have value AA"). 
However, I'm wondering whether an approach that favors more client-side 
validation would be better. Something like "validate on the client side 
as long as no call to the server is required to retrieve additional 
data or access external services." The answer, I imagine, is "it 
depends." But I'd be interested to know what factors to consider and 
what guidelines others are using for their Flex data capture 
applications. Thanks

Gary Ault
Bureau of Labor Statistics 

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