How to check if a datareader is closed or opened?
What is openquery?
What are the main differences between classic ado and ado.net?
What are datareaders?
Which object needs to be closed?
Define table relations?
What are the advantages using ado.net?
What is ole word?
About ADO and its objects ?
Is bulk insert faster than insert?
What is concurrency? How will you avoid concurrency when dealing with dataset? (One user deleted one row after that another user through his dataset was trying to update same row. What will happen? How will you avoid the problem?)
What are three methods for displaying data in a syncfusion datagrid
What are all features of ADO.Net?