I had the same research and seminar on "Enterprise Computing"
and "Enterprise Applications" (in March 2000) here are some of them:

1)
The term enterprise  implies highly scalable, highly available,
highly reliable, highly secure,
transactional, distributed applications. Enterprise applications
require access to a variety
of infrastructure services, such asdistributed communication
services, naming and directory
services, transaction services, messaging services, data access and
persistence services,
and resource-sharing services. These infrastructure services are
frequently implemented on
different platforms using different products and technologies,
making it difficult to build portable
enterprise-class application  systems.

2)
The term 'enterprise' implies extremely robust computing. Enterprise
applications support core business operations, and any failure of
these applications causes an interruption in business operations.


3)
-Extremely robust application environment
-Supporting wide distribution
-Massive scalability
-Non-stop availability
-Bulletproof reliability
-Handling many concurrent client request and high number of
complicated transactions