/// <summary>
/// Update Customers by given list of Customers.
/// </summary>
/// <param name="db">the table is MyDB</param>
public void Update(MyDB db)
{
Update(db._customersTable);
}
/// <summary>
/// Insert another MyDB into this instance of MyDB.
/// </summary>
/// <param name="db">MyDB</param>
public void Insert(MyDB db)
{
Insert(db._customersTable);
}