Security Setting For Creating, Trainning Session Model With ASP.NET Front-end AP

Hi,
I would like to demonstrate mining temporary models in an ASP.NET application.

Creating, trainning, predicating actions are all witten at C# codes as follows:





Code Snippet

using (AdomdCommand cmd = new AdomdCommand())
{
// Build temporary mining model
cmd.Connection = asConn;
cmd.CommandText = "CREATE SESSION MINING MODEL " + modelName +
" (" +
"HCVS_MemberId Text KEY," +
"HCVS_MeasureDate DATE KEY TIME, " +
"SysPressure LONG CONTINUOUS PREDICT, " +
"DiaPressure LONG CONTINUOUS PREDICT," +
"Pluse LONG CONTINUOUS PREDICT" +
") " +
"USING Microsoft_Time_Series(Missing_Value_Substitution='Mean' ) "; // Periodicity_Hint = '{12}'
cmd.ExecuteNonQuery();

// Train Data
cmd.CommandText = "INSERT INTO " + modelName + " (HCVS_MemberId, HCVS_MeasureDate, SysPressure, DiaPressure, Pluse) " +
"OPENQUERY([Healthcare], " +
" 'SELECT HCVS_MemberId, HCVS_MeasureDate, SysPressure,DiaPressure,Pluse" +
" FROM v_VitalSignForecast WHERE HCVS_MemberId=''" + id + "'' AND HCVS_MeasureDate>=''" + from.ToShortDateString() + "'' AND HCVS_MeasureDate<=''" + to.ToShortDateString() +"'' ')";

cmd.ExecuteNonQuery();
// Predict upon the Train Data. In addition, the standard deviation of each predicated value is retrieved
cmd.CommandText = "SELECT FLATTENED " +
"( SELECT *, " +
" SysPressure + PredictStdev(SysPressure) AS [SysPressure_PlusStdev], " +
" SysPressure - PredictStdev(SysPressure) AS [SysPressure_MinusStdev] " +
"FROM PredictTimeSeries(SysPressure, " + fDays + ") AS SysTable " +
") " +
"FROM " + modelName ;


AdomdDataAdapter adapter = new AdomdDataAdapter(cmd);

DataSet sysDS = new DataSet();
adapter.Fill(sysDS);
The problem is that I do not know how to configure my Analysis Service Server to let ASP.NET account can utilize it. And ASP.NET account in trun impersonates the account who is authorized to use Healthcare DB in the Openquery. Please give a help. Thanks a lot.

Ricky.