VISION/Web

• Generation of Java applets allows fast, secure, transaction-based applications over the Web without the limitations of HTML, CGI, or Plug-ins.
  
• VISION and VISION/Web together provide a single, rich, object-oriented development environment for business-critical client/server applications on intranets or the Internet.
  
• VISION's dynamic application partitioning and message-based architecture are ideal for enterprisewide, business-critical Web applications.
  
• Transaction-based Web applications can take full advantage of VISION's native database drivers, and failover/fault tolerance through replicated application services.
  
• The database logic for forms-based Web applications (inserts, updates, deletes, queries, and form navigation) is generated automatically through intuitive dialog boxes.
  
• Client-side business logic, data validation, and dataset scrolling improve response times, reduce network traffic and lower server load.
• State management is built-in to VISION/Web. Internet or intranet communication is via CORBA IIOP.

Partitioning and Database Drivers Built-in
VISION's dynamic application partitioning and message-based architecture are essential to the Webs thin client model. VISION's native database drivers for multiple RDBMSs are highly optimized, tried and tested. There is no need to drop down to any low-level coding, or wait for emerging Java APIs such as JDBC or RMI. In fact, no Java programming is required, though custom Java objects may interact with VISION objects.

State Management and CORBA IIOP
Managing transaction state with an HTML/CGI solution is extremely difficult. But because all VISION objects have state, and communicate with each other using VISION's message-based architecture, state management is built-in to VISION/Web, and is completely transparent to the developer. Since communication over the Internet is via CORBA's Internet Inter-ORB Protocol (IIOP), the standard protocol for Internet computing, VISION/Web is compliant with Netscape ONE.

Running a VISION/Web Application
Once a VISION/Web Java applet has been created, it is invoked from an HTML page on your clients browser. The Java applet consists of your application-specific classes, the VISION/Web foundation classes, and the Unify Object Broker classes. These are downloaded the first time the applet is invoked. In the running applet, network traffic is reduced to a minimum since only object messages are transferred between the client and server, not HTML. The running applet is a fully functional client/server application: data sets can be retrieved and scrolled through, on the client, data can be input and validated, on the client. You can decide how much, or how little business logic resides on the client, and how much on the server.

Security
In a transaction-based intranet or Internet environment, security is vital. VISION/Web is fully compatible with SSL (Secure Sockets Layer), the industry standard protocol for secure transactions over the Internet.

Advanced Client/Server Development for the Web
The combination of VISION and VISION/Web provides a single, rich object-oriented development environment for business-critical client/server applications on intranets or the Internet.

System Requirements

• Supported operating systems: Solaris 2.5, Windows NT, Windows 95

• Supported browsers: Netscape Navigator 3.0 (Suns Hot Java and Microsofts Internet Explorer planned for Q1 97)

• Supported databases: Oracle, Sybase, Informix, DB2/2, DB2/6000, DB2 on MVS, DB2/400, MS SQL Server, Ingres, Unify DataServer, Unify DataServer ELS, MS Access, dBase, SQL Anywhere

• Memory Usage:
  

  	UNIX	Windows NT/95
  Development	32MB	32MB
  Deployment:Client	24MB	24MB
  Deployment:Server	24MB	24MB

• Disk usage:
  

  	UNIX	Windows NT/95
  Development	110MB	40MB
  Deployment:Client	N/A	N/A
  Deployment:Server	55MB	17MB

• A Java compiler is included with VISION/Web. At least one VISION development license is required.