Trigger for Beginers , DTD to relational database mapping gor beginers

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1) Can any one suggest link where we can read how to write
triggers on tables which start from basics .

2) Is there any website or document explaining how we can
map DTD into a relational database.(XML Related )

// Please suggest links or documents from which a common person can understand should not be too complex //

Thanks for the help !! Posted in: #Databases

It is a nice concept buddy if you want I can write a small tutorial for you on this in simple and my own style but please tell me in which database your gonna work.....


-Arvind