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Architecture of Informatica 8.6
PowerCenter has a service-oriented architecture that provides
the ability to
scale services and share resources across multiple machines.
Highavailability functionality helps minimize service downtime due
to unexpectedfailures or scheduled maintenance in the PowerCenter
environment.
Informatica E! product" #nown as Power Center. Have $ main
components%
1. Informatica Integration Services
he Integration &ervice moves data from sources to targets
based onwor'(ow and mapping metadata stored in a repository. )hen a
wor'(owstarts" the Integration &ervice retrieves mapping"
wor'(ow" and session
metadata from the repository. It extracts data from the mapping
sources andstores the data in memory while it applies the
transformation rulescon*gured in the mapping. he Integration
&ervice loads the transformeddata into one or more targets.
)hen you run a wor'(ow" the Integration &ervice process
starts and loc'sthe wor'(ow" runs the wor'(ow tas's" and starts the
process to runsessions.
he Integration &ervice uses the !oad +alancer to dispatch
tas's. he !oad+alancer dispatches tas's to achieve optimal
performance. It may dispatch
tas's to a single node or across the nodes in a grid.
he Integration &ervice can achieve high performance using
symmetricmulti-processing systems. It can start and run multiple
tas's concurrently. Itcan also concurrently process partitions
within a single session. )hen youcreate multiple partitions within
a session" the Integration &ervice createsmultiple database
connections to a single source and extracts a separaterange of data
for each connection. It also transforms and loads the data
inparallel.
2. Informatica PowerCenter repository
,ll the metadata is stored in repository. Integration services
will send reuestto repository to get the metadata about wor'(ow"
session" mapping" source"target etc.
he PowerCenter repository resides in a relational database. he
repositorystores information reuired to extract" transform" and
load data. It also storesadministrative information such as
permissions and privileges for users and
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groups that have access to the repository. PowerCenter
applications accessthe PowerCenter repository through the epository
&ervice.
3. Informatica Client Tool.
/e*ne transformation process" 'nown as mapping. (Designer) /e*ne
run-time properties for a mapping" 'nown as sessions
(Wor!ow "anager)
0onitor execution of sessions (Wor!ow "onitor)
0anage repository" useful for administrators (#epository
"anager)
eport 0etadata ("eta$ata #eporter)
