A feature of Internet Information Services (IIS) that allows logs of Web site activity to be written directly to a database that is compliant with the open database connectivity (ODBC) protocol. You can analyze the record of Web site traffic stored in the database and generate reports using standard database analysis tools. This is more convenient than logging Web traffic in text files and then importing them into database tables.
The Usage Import utility of Microsoft Site Server Express supports only the IIS and NCSA log file formats, so if you want to use Usage Import and Report Writer to generate reports of your Web site traffic, don’t use ODBC logging to collect the information - use Microsoft IIS Log File Format or NCSA Common Log File Format instead.