Last modified on March 21, 1995

Visual Environment

Visualization of program and execution:

Program:

• Use Flow charts
• Use Nassi-Shneiderman flow chart
• Represented internally as an abstract syntax tree
• Interconnection diagram showing how the program is organized

Execution:

• Users can follow the program's progress
• Each statement is highlighted as it is executed, both in the programming language and in the automatically generated corresponding flowcharts

Visualization of Data information:

• Graphical data space is viewed through a set of color displays
• Devoted primarily to using "direct manipulation" as a means for information retrieval and using graphical view of a database, coupled with zooming capability, for visualization of the information retrieved