PeerDirect Corporation, last
week, announced the availability of the PeerDirect Replication Engine (PDRE).
PDRE enables software developers to distribute applications and data to remote
offices and mobile end-users, and yet maintain centralized control over
applications and data. The product uses bi-directional database replication
technology, which exchanges updates between partners on a continuous basis. It
uses a compressed data stream that is secured using Triple DES encryption.
There is no need to execute periodic database snapshots--a 'live' query,
requesting what has changed, is performed at each site for every replication
In the database world, it has
been a common practice to store data in more than one place, either for an
online backup or as a failover site. This practice has evolved into a
synchronization or replication process. PeerDirect's approach to replication
supports synchronization of systems or replication of data in a heterogeneous
environment where you have different databases involved, as well as supporting
a longer termed disconnection whether it be synchronization on a daily basis or
longer periods of disconnection--for example, a month.
What's new and enhanced?
Less bandwidth is used during
bi-directional database processes with Resource-Optimized Replication
Management, which enables smart resource utilization.
The net result of using
replication as a way to move data back and forth is a product that provides
two-way read-write data replication, enabling databases on both sides to be
edited and fully functional while disconnected. In addition, a feature called
Dynamic Bandwidth Management handles the actual bandwidth, optimizing around
any latency in the network. In real-time, it figures what the optimal path for
flowing data around the network is going to be, and moves data in the most
efficient manner possible. It also has the capability to deal transparently
with any failure or change in the environment.
The ability to identify and
flag improper data entry or application logic errors, without disrupting the
replication process ensures data replication success in the field. Application
support personnel are able to address such issues at a later time. In extreme
environments, this provides an efficient method to deal with those issues as
part of the processing.
Heterogeneous Database Support
PeerDirect's solution offers
true heterogeneous database support, enabling mobile users with a lightweight
database, such as MSDE, and datacenters with 'industrial strength' databases
such as DB2 or Oracle to float changes seamlessly back and forth. PeerDirect
does not require a particular database, users can pick the database of their
liking--PDRE can interoperate between the two, offering more flexibility for
remote and mobilized environments.
Dynamic Data Slicing
'Dynamic Data Slicing' has been refined in this release.
Similar to picking the database of choice, PDRE enables users to choose the
data that they want on a device. Users can provide just the data that is
pertinent to a particular individual or region without changing the
application. A super-set of the data still resides centrally; only the data
required by that particular user is shipped around, taking advantage of short
periods of network connectivity or narrow bandwidth.
PeerDirect technology ensures that field service users on a
certain device get not only the data but also the manuals and any change orders
for that device. For example, a user who gets certain customer data not only
receives the customer information but all of the calls associated with that
customer--and all of it is synchronized automatically. The field user is then
able to slice up that data so that it makes sense from a business perspective.
Often, the applications themselves
are an issue that needs to be dealt with. PDRE has the capability to manage
how an application is deployed, how updates to an application that involve not
only logic changes but also may involve schema changes to the actual database
are handled, and to ensure that the flow of changes that occur in the
environment are consistent and that no data is lost.
Based in Bedford, Mass., PeerDirect Corporation is a supplier of advanced, patented
technology for distributed application and database deployment and management.
For additional information, please visit http://www.peerdirect.com.