From Overview of Tango System and Application to Distance Education Tango Presentation San Diego MRA -- June 26 98 Datemod;June 26 98. byTangoInteractive Team
Use a database to store material so as to
Manage large collections
More easily adapt to changing/different browsers by "just" changing templates
Back-up, security etc. well established capabilities
Database has curricula material of all (4) levels of sophistication and supports both synchronous and asynchronous learning
database stores multimedia information -- video, audio and images
Also administrative information; organization of courses into programs; grades; student/teacher data