1, enterprise information network refers to the computer network dedicated to enterprise internal information management, generally dedicated to an enterprise, covering all departments of enterprise production, operation and management, and providing the sharing of hardware, software and information resources of the whole enterprise.

2. Online transaction processing refers to the use of computer networks to connect business processing computer equipment or networks distributed in different geographical locations with the business management center network, so that business processing activities or customer service can be processed in a unified and real-time manner at any network node.

Online transaction processing is widely used in finance, securities, futures and information service systems.