Define data access layer?

528

What is connection string?

522

What are the different namespaces used in the project to connect the database? What data providers available in .net to connect to database?

767

What is ado.net components?

501

Does sqlclient and oledb class share the same functionality?

530

What is the advantage of ado.net?

537

What are two types of transaction supported by ado.net?

526

What are the steps you will take to improve performance?

457

Explain why canot we use multiple inheritance and garbage collector paralelly in .net?

586

What is the executescalar method?

576

Explain About ado.net components/objects. Usage of data adapters and tell the steps to retrieve data.

551

What is difference between connected and disconnected architecture in ado.net?

577

What is the difference between Command and CommandBuilder object?

585

What is the functionality of data provider in ado.net?

483

Which is better entity framework or ado.net?

507