Answer / vivek

Command object is only one to execute queries in the
backend.
Ex:
SqlConnection cn=new SqlConnection();
SqlCommand cmd=new SqlCommand("SELECT * FROM EMP",cn);
cmd.ExecuteNonQuery();
cmd.ExecuteReader();
cmd.ExecuteScalar();
Cmd.ExecuteXmlReader();
command object has only these 4 methods to execute queries
in the backend.

Answer / shwetha

by the namespace using System.Data.Sqlclient


by using Sqlcommand

Dim cmd as new Sqlcommand("Queries");

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

0 Answers  

---

What is ado.net objects?

0 Answers  

---

What is two way data binding android?

0 Answers  

---

Can I use One Data Set for More than one Data Adapter?

6 Answers  

---

Explain the DataAdapter.Update() and DataSetAcceptChanges() methods.

0 Answers  

---

What is difference between datagridview and datagrid control in winforms?

0 Answers  

---

What is ole used for?

0 Answers  

---

What is adodb dll?

0 Answers  

---

Define data access layer?

0 Answers  

---

Explain the basic use of "dataview" and explain its methods.

0 Answers  

---

How to retrieve the user id which is provided while windows authentication?

0 Answers   Cap Gemini,

---

how can implement dropdownlist in particular of dataset when try to update?

0 Answers   TCS,

---