Your Project in Runtime 

The following describes the chain of events which a simple Drag&Relate gesture triggers. By observing this scenario, you see the different features of a run-time environment and their importance.

       1.      An end user accesses the Database Unifier project from SAP Enterprise Portal.

The end user navigates the interface, clicking icons and links or dragging and dropping between these different visual elements representing data. This intuitive Drag&Relate interface creates sophisticated queries on the fly.

       2.      The URL produced by a user’s activity on the interface is relayed to the Web server, the Internet Information Server (IIS). There it reaches the SAP Unification Server ISAPI connector, a DLL extension.

       3.      The ISAPI serves as a filter, which identifies the URL as being in the Drag&Relate Navigation Protocol, and relays it to Unification Server, where the URL is parsed, translated into an SQL statement in Drag&Relate flavor, and passed on to an appropriate Active Server Page.

       4.      Embedded in the ASPs are scripts that are interpreted and executed on the server at run time. The ASP receives the SQL statement in Drag&Relate flavor as a parameter for a given scripted object. This object then instantiates a Drag&Relate OLEDB Provider and passes the statement to it.

       5.      The Drag&Relate OLE DB rephrases the SQL statement, eliminating its Drag&Relate flavor and making it standard SQL, passing it on to whatever standard OLEDB Provider you have for your database.

This standard OLEDB Provider directly retrieves data from the database.

       6.      The results of the query are returned to the Active Server Page, filling a form that displays the information on the client’s browser. See steps 6 through 10 in the diagram below.