Kbase P66801: What is Data Replication
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
22/03/2004 |
|
Status: Unverified
GOAL:
What is Data Replication
FIX:
The distribution of copies of information to one or more sites. In a single enterprise, sites spanning organizational and regional boundaries often require the timely sharing of transaction data across databases in a consistent manner.
Developing and deploying a successful replication process involves careful planning and input from business experts, application developers, and administrators.
Replication is a strategy for automatically copying data to other systems for backup reasons or to make that data more accessible to people at other locations.
Replication can also distribute data to multiple servers that can make that information available to multiple simultaneous users. A load-balancing scheme distributes incoming requests to an appropriate server.
This is the concept of a clustered system and is often used for busy Web sites.
Progress 4GL supports implementing trigger-based replication, and provides Database Manager support for implementing log-based site replication.