Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
ODBC vs ADO
Message
General information
Forum:
Visual FoxPro
Category:
Client/server
Title:
Miscellaneous
Thread ID:
00138418
Message ID:
00138852
Views:
17
>Craig,
>
>>>ODBC is old technology and not suited for n-tier solutions.
>This is incorrect. ODBC is a mechanism for querying data from heterogenous databases. It is fine for multi-tier development and has been used for many years now for just that. Just ask VB developers that have been using ODBC Direct, RDO, JET and other wrappers for ODBC.
>

This brings up my original question then...in a physical n-tier environment, how do you get the data to the user services tier?

>As a matter of fact the mechanism that ADO uses to query VFP data is an
>OLE-DB-ODBC wrapper.
>

Yes, I understood that if an OLE-DB provider is not available for the data that ODBC is used.

>>>ADO uses OLE-DB.
>ADO is a wrapper for OLE-DB. OLE-DB is Microsoft's future database mechanism and is meant to replace ODBC.
>
>
>>>The nice thing is, that the interface to the data will always be the same, no >>matter what the back end data is. ODBC calls can vary depending on the back >>end data.
>This is sort of true and sort of not. ADO just like all lowest common denominator systems has its limits too. There are different levels of OLE-DB providers and ADO adapts its features to whatever provider it is using.
>
>>>I suggest you pay a visit to www.microsoft.com/data. You'll find lots of >>information on OLE-DB and ADO.
>I agree this is the BEST source of info.
>
>Thanks,
>Rod

I appreciate the clarification. I'm still trying to understand ADO.
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform