请SQL Server高手帮我解释下下面这段代码是什么意思

sCon="Provider=MSDASQL;DSN=300tsc;UID=sa;PWD=;"

Setconn = CreateObject("ADODB.Connection")

    conn.ConnectionString= sCon

    conn.CursorLocation = 3

    conn.Open

SetoRs = CreateObject("ADODB.Recordset")

Set oCom =CreateObject("ADODB.Command")

Set oCom.ActiveConnection =conn

    oCom.CommandType= 1