>Hi,
> As what I have read, middle layer in 3-tier model is used for data hadling such as data validation, retrieve and write data, and anything related to data. I have some question :
>
>1. Since COM model is used, we couldn't use dataenvironment. Are we going to use USE command to open table? According to MSDN documentaion, it IS slower than compare with open table in DATAENVIROMENT. Is it right? How to solve it?
>

1. You can use the data environment class programatically, and without Forms.

>2. How to return more than one record (recordset or cursor) to UI layer?
>

2. You can use XML.

BOb