Answer to Question 1
When using Microsoft Access and IIS to create Web processing applications, the connection to the Access database must be provided by using an ODBC data source. The ODBC data source should be a system data source. The Web pages that access the database can use various technologies, including the popular PHP scripting language.
Answer to Question 2
XML Web Services is a means for sharing program elements over the Web. It involves several standards, including XML, SOAP, WSDL and UDDI. An example would be a database application that retrieves and produces weather forecasts based on ZIP codes. Using XML Web services, this application could be published so that it can be embedded in various Web pages. Users of those Web pages would then actually be using this application without realizing that it is separate from the Web page.