It is a collection of nodes and services. Further, this nodes and services can be categorized into folders and sub-folders based on the administration requirement.For example, in the below screenshot, you can see under domain window the folder 'DomainRajesh' is created under which we have created a node name 'node01rajesh' and services as 'guru99 integration services'.Node is a logical representation of a machine inside the domain. Node is required to run services and processes for Informatica.You can have multiple nodes in a domain. In a domain, you will also find a gateway node.The gateway node is responsible for receiving requests from different client tools and routing those requests to different nodes and services.There are two types of services in Domain.
Application Services: Application service represents the server specific services like integration service, repository service, and reporting service. These services run on different nodes based upon the configuration.PowerCenter RepositoryPowerCenter repository is a relational database like Oracle, Sybase,server and it is managed by repository service. It consists of database tables that store metadata.There are three Informatica Client tools available in Informatica Powercenter. They are Informatica. Workflow ManagerThese clients can access to the repository using repository service only.To manage a repository there exists an Informatica service called Repository Service. A single repository service handles exclusively only one repository.
Bringing Architecture To The Next Level Pdf. Click to enlarge and get a full blown. Merge and split Merge different file formats into a single PDF or split a single. Bringing Architecture to the Next Level teaches you how to expand the way you think about architectural design, shift your mindset to reach breakthrough ideas, and leverage your design process to get more with less. You will learn to 'rethink' new technologies to unleash your innovative edge while optimizing for occupant needs to make your designs 'sing'. Read this guidebook to set your work.
Also, a repository service can execute on multiple nodes to increase the performance.The repository services use locks on the objects, so multiple users cannot modify the same object same time.You can enable version control in the repository. With the version control feature, you can maintain different versions of the same object.Objects created in the repository can have following three state. Impacted: Impacted objects are those whose child objects are invalid. For example in a mapping if you are using a reusable transformation, and this transformation object becomes invalid then the mapping will be marked as impacted.Domain ConfigurationAs mentioned earlier, domain is the basic administrative control in Informatica. It is the parent entity which consists of other services like integration service, repository service, and various nodes.The domain configuration can be done using the Informatica admin console.
The console can be launched using web browsers. Once open in a web browser it prompts for administrator login. The password is set during the Informatica installation.After login into the Informatica domain, the home page looks something like this.In the left pane it shows the existing nodes, repository services, integration services under the domain.On the main window, it shows the status of those services, whether those are up or down. To connect to the sources/targets PowerCenter client uses ODBC drivers.Repository ServiceThe repository service maintains the connections from Powercenter clients to the PowerCenter repository. It is a separate multi-threaded process, and it fetches, inserts and updates the metadata inside the repository.
It is also responsible for maintaining consistency inside the repository metadata.Integration ServiceIntegration service is the executing engine for the Informatica, in other words, this is the entity which executes the tasks that we create in Informatica. This is how it works. The integration service also combines data from different sourcesFor example, it can combine data from an oracle table and a flat file source.So, in summary, Informatica integration service is a process residing on the Informatica server waiting for tasks to be assigned for the execution. When we execute a workflow, the integration service receives a notification to execute the workflow. Then the integration service reads the workflow to know the details like which tasks it has to execute like mappings & at what timings. Then the service reads the task details from the repository and proceeds with the execution.
Sources & TargetsInformatica being an ETL and Data integration tool, you would be always handling and transforming some form of data. The input to our mappings in Informatica is called source system. We import source definitions from the source and then connect to it to fetch the source data in our mappings.
There can be different types of sources and can be located at multiple locations. Based upon your requirement the target system can be a relational or flat file system.
Flat file targets are generated on the Informatica server machine, which can be transferred later on using ftp.Relational– these types of sources are database system tables. These database systems are generally owned by other applications which create and maintain this data. It can be a Customer Relationship Management Database, Human Resource Database, etc. For using such sources in Informatica we either get a replica of these datasets, or we get select privileges on these systems.Flat Files - Flat files are most common data sources after relational databases in Informatica. A flat file can be a comma separated file, a tab delimited file or fixed width file. Informatica supports any of the code pages like ascii or Unicode. To use the flat file in Informatica, its definitions must be imported similar to as we do for relational tables.
Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
March 2023
Categories |