It uses SQL commands to retrieve and update data.?

Short answer: Example: SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM Customers", connection); DataSet dataset = new DataSet(); adapter.Fill(dataset, "Customers"); // Populates the DataSet with data from the "Customers" table

Example code

SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM Customers", connection); DataSet dataset = new DataSet(); adapter.Fill(dataset, "Customers"); // Populates the DataSet with data from the "Customers" table

Real-world example (ShopNest)

Always pass order ids with parameters: cmd.Parameters.AddWithValue("@id", orderId). Never concatenate user input into SQL.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.