Introduction to Informatica Architecture

Informatica is a software service based out of California, United States, and it has laid the foundations for doing business on cloud through their most notable offerings. At the heart of all these, there lies the consolidated ETL (Extract, Transform, Load), which makes possible the advanced software function of data integration. What this means that businesses can pull data from a number of different sources, and could help businesses achieve many other essential software goals like data visualization, processing, masking, measuring quality, replication etc.

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        Informatica Architecture

What is meant by the Informatica Domain?

As a SOA, the effective Informatica Domain represents the inherent administrative tool, which lies fundamentally at the center of seeing over, as well as potentially controlling necessary functions. It essentially showcases a collection of nodes and services. Individual machines are referred to as ‘nodes’, and they form the basis of promulgating service execution, as well as a number of different processes. In every domain, there’s a centralized gateway node, which is responsible of redirecting client requests to other nodes.

How can you configure the Domain?

For configuration, you need to access the official Informatica admin console. Generally, they open with a browser, and the administrator login is possible through credentials. These are presented to the party mainly responsible for administration at the time of installing the Informatica ETL. One can easily view all the necessary nodes and their associative services, alongside their current respective status. 

-----      Related Article: Informatica PowerCenter - ETL Tools      -----

Essential Domain Properties 

There are actually numerous properties in Informatica Domain may have. some properties are essential for the configuration, they are:

1) Resilience Timeout

2) Database host

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3) Dispatch Mode

4) Database Type. 

What is the Repository and how does it relate to the Domain?

PowerCenter Repository is a relational database in which the tables hold metadata, which are then usually operated upon with repository service. The three most important tools are : Informatica Designer, Workflow Manager and Workflow Monitor. Generally, the individual objects in the repository are, by default, with proper access so that not everyone could change the information. A feature known as version control allows for the creation and maintenance of different versions for the very same object at large. There’s a third state known as ‘impacted’, which usually refers to those in which cases the child objects are invalid.  

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What are Nodes?

As already noted above, Nodes are effective accounts that may exist in numbers across an entire Informatica Domain. Actual people when accessing the domain must do this by the way of their own workstations, which is what drives the effective processes and services to achieve tasks and requests. Nodes are usually represented as domain’s main individual units under control. 

What is the Reporting Service?

This is the major service, which can be said to drive all the necessary functions across an entire Informatica Domain. Its main role is to connect the PowerCenter version for client access to the repository. Across the domain, however, this service acts as its own multi-thread process, and the functions include fetches, inserts and updates all necessary metadata. In this way, it is necessary for maintaining consistency across the repository.  

What is the Integration Service?

The Integration Service is the main execution provision for Informatica, and it represents the major functions that starts with the execution of any particular workflow. This is initially accessed by this service through the repository maintained with respect to metadata in the repository. In every fashion, the integration service is responsible for loading the appropriate data onto target systems. 

The Roles of Workflow Manager and Monitor

Workflow managers and monitors respectively position as effective tools that drive the repository service, and connects with all necessary connection with integration. They also fall within the essential tools confirmed with respect to be used by clients. The integration service has workflow management and monitoring at the heart, which actually helps in the corrective and efficient loading of data to the target system. 

Frequently Asked Informatica Interview Questions & Answers

Source and Target Systems.

As Informatica is a Data Integration and ETL tool, yow always manage and transform some format of data. In Information, input the mappings is called source system. Depending on the requirement, the target system can be a flat or a relational file system.

Flat File: They are general data sources following the relational databases. Flat files are tab delimited file, comma separated file. Informatica endorses code pages like unicode, ascii.

Relational file:  Relation files are database system tables. These are usually owned by the applications that maintain and create data. Applications can be Human Resource Database, CRM Database.

Conclusion

This is what the entire Informatica Architecture is all about, and it effectively reflects all the necessary applicative information one needs to know. It is Service Oriented Architecture. Informatica Domain plays a key role in Informatica Architecture.

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