Monday, December 13, 2010

37 important interview questions on ADO.NET

37 important interview questions on

This section will cover the most asked questions related to ADO.NET during .net interview by the interviewer so have a look on the following and do revise it when ever you go for the ADO.NET interview
Normally the .net interviewer starts with.....

What is the namespace in which .NET has the data functionality class?
Can you give an overview of ADO.NET architecture?
What are the two fundamental objects in ADO.NET?
What is difference between dataset and data reader?
What are major difference between classic ADO and ADO.NET?
What is the use of connection object?
What is the use of command objects?
What is the use of data adapter?
What are basic methods of Data adapter?
What is Dataset object?
What are the various objects in Dataset?
How can we connect to Microsoft Access, FoxPro, and Oracle etc?
How do we connect to SQL SERVER, which namespace do we use?
How do we use stored procedure in ADO.NET and How do we provide parameters
to the stored procedures?

How can we force the connection object to close after my data reader is

I want to force the data reader to return only schema of the data store
rather than data.

How can we fine-tune the command object whe we are expecting a single

Which is the best place to store connection string in .NET projects?
What are the steps involved to fill a dataset?
What are the various methods provided by the dataset object to generate

How can we save all data from dataset?
How can we check that some changes have been made to dataset since it was

How can we add/remove row is in “Data Table” object of “Dataset”?
What is basic use of “Data View”?
What is the difference between “Dataset” and “Data Reader”?
How can we load multiple tables in a Dataset?
How can we add relation between tables in a Dataset?
What is the use of Command Builder?
What’s difference between “Optimistic” and “Pessimistic” locking?
How many ways are there to implement locking in ADO.NET?
How can we perform transactions in .NET?
What is difference between Dataset Clone and Dataset. Copy?
Can you explain the difference between an ADO.NET Dataset and an ADO
Record set?

Explain in detail the fundamental of connection pooling?
What is Maximum Pool Size in ADO.NET Connection String?
How to enable and disable connection pooling?
What extra features does ADO.Net 2.0 have?
So friends answering to above questions on ADO.NET helped me to clear interview in
front of the interviewer.

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