What are the data providers used in ado.net

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How xml files and be read and write using dataset ?

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What is the meaning of executenonquery?

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Explain how to find the given query is optimised one or not?

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Explain how to bind the controls(best practice) comboboxes to the data in the dataset?

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i making a project using windows application c#, i want to show user name, password, and one button login. i wanna make it with sealed class .how its possible . when i clicked my login button all project should be open. pls cleare me.

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Define ado.net?

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What you mean by filtering of data?

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What is acid in ado.net?

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Can we do database operations without using any of the ado.net objects?

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What are the steps you will take to improve performance? Will you use dataset or datareader?

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What are the drawbacks of using ado.net?

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