the headquarter.
Replication can be unidirectional or bidirectional (see below).
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Benefit provided by this version 18 new feature:
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Replication frequency:
scheduled
Replication for branch offices is easy.
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Replication in tree
structure
The replication can be scheduled, which means it happens at preset time intervals: in the evening at 8:00PM, every 2 hours, Saturday only, etc.
Replication can also be started at any time, on demand.
The replication schedule is defined per server pair.
A tree-like replication (by level)
corresponds for instance to a global enterprise that synchronizes
each national headquarter
first, then the individual countries.
Replication can be unidirectional
or bidirectional (see later).
Benefit provided by this version 18 new feature:
Perform replication during low server
usage
Benefit provided by this version
18 new feature:
Replication for highly structured organizations is easier.
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Unidirectional
replication
In an unidirectional replication, data travel only in one direction. Updates are only performed from one server to the other.
The type of replication is defined per server pairs.
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Benefit provided by this new feature:
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Bidirectional
replication
In a bidirectional replication
data are synchronized
both ways. The updates
are performed on each
one of the servers.
Conflict resolution for updates is automatic. You can
also manage conflicts by programming. The type of replication is defined per server pairs.
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Replication can be performed in "continuous" mode, that is for
each modification of the database.
Note that the replication is performed in asynchronous mode,
which means there can be a delay between the database modification on the server and the carry over of this modification to the
other server.
For a synchronous modification, i.e. in real time, you need to use
the Cluster mode, also available.
The replication schedule is defined per server pair.
Benefit provided by this version 18 new feature:
Continuous server synchronization. Ability to have a backup server.
140
Benefit provided by this version 18
new feature:
Flexibility, load balancing.
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Replication frequency:
continuous mode
It is easy to send data to a remote site.
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Replication security
During a replication, if one of the servers is not available (ADSL
link offline), the replication will be re-tried automatically: in 10 seconds, in a minute, in 3 minutes, in 10 minutes, in an hour, or
after the following time interval, etc.
You can request to be notified (via email, ...) when a replication is
delayed (see new feature # 130).
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