Folkert Klemme Data Access Corporation Agenda 1

Folkert Klemme, Data Access Corporation

Agenda. 1. Business Aspects u 2. Overview Internet Technology u 3. MS Internet Information Server with ASP u 4. The Data. Flex Web. App Server u 5. Development of Web. Apps u

Business Aspects. u Internet Applications u A Technology Shift ? u Like DOS to Windows u Delay with Y 2000 / Euro u Internet is the strategic Goal !

Imagine the Possibilities. u Commercial Applications u Business Information Applications u Dynamic Content Publishing

E-Commerce. u Any u or type of commercial applications just Online Shopping u Less Business-to-Consumer u More Business-to-Business

Business Information Systems. u Information Distribution u Communities u Portal Application u Internet Relationship Management u One-to-One Marketing Your Ideas in the Internet

Dynamic Content Publishing. u Authoring Server u More than 90% of the Web Sites contain pure HTML u Web Functionality u Forum u FAQ u Dealer List u Download Area

Base Technology. TCP/IP u HTTP, FTP, SMTP, POP 3 u HTTP-Server u Clients: u u Netscape Navigator Internet Explorer Transfering HTML Pages u u Header Body

HTTP Communication.

Communication II.

Dynamic Web. Apps. CGI, ISAPI u Java Applets u Java. Script, JScript, VBScript u Client- or Server-side Scripts u Active Server Pages (ASP) u

Web. App Architecture I. u Approach CGI / ISAPI u u u u Develope Web. App from the scratch Languages: C, Pearl ? DBMS Access via ? Standards ? Extremly high Resources Two-Tier Architecture ? Session starts a process Dont reinvent the wheel

Web. App Architecture II. u Approach Java u Two or Three-Tier Architecture DBMS, Java/Server, Java/Client Standards ? Extremly high Resources u Server: Net. Dynamics, Silverstream u u u

Web. App Architecture III. u Approach Server-side Scripting u proprietary Script- or Markup Language Limited to Two-Tier Architecture very often ODBC Interface (Unix ? ) u Server: Tango, Cold Fusion u u

Web. App Architecture IV. u Data. Flex Web. App Server u u u Server-side Scripting via ASP Web Business Process Objects Three-Tier Architecture Direct Database Driver Unlimited Database Supporting all Standards

Web. App Architecture I.

Data. Flex WBPO. Subclass of Business Process u Contains DD-Structure u Functions, Procedures u Methods u u u Request. Save, Request. Delete, Request. Find, Request. Clear, Do. Process, DFFunc Property u DDValue

Web. App in Details.

The Data. Flex Web. App Server. u Advantages u u u Standard Internet Technology for Internet Functionality. . . extended by Data. Flex for Database & Business Functionality No “Not possible” Transparent and portable access to the Database Unlimited Database included Offline Applications with the same Tool

Data. Flex Web. App Server. Windows NT 4 u MS Internet Information Server 4 u Visual Data. Flex 5. 1 or higher u Data. Flex Web App Server u u Development License

Internet Information Server. FTP Server u HTTP Server u CGI Interface u ISAPI Interface u u Active Server Pages

Active Server Pages. The meaning of <% and %> u Script Languages u Objects, Methods, Functions u Objekte Response & Request u HTML Forms u Tuesday 10: 50 am

Web Application. u u u 1. Develope a WBPO as VDF Web. View (WVW) 2. Compile VDF Web Project 3. Start VDF Web Project 4. Create a virtual Directory (App. HTML) 5. Define WBPO as COMWBPO in GLOBAL. ASA 6. ASP can access COMWBPO

Data. Flex Web. App Server. No special demand to the Client u Real Thin-Client Technology u Supports classic and Internet Applications u Supports all major Databases (native Driver) u Works as Add-On for every DB-Application u

Samples