What is the difference between Joiner transformation and source qualifier?
While joining two relational tables using a source qualifier, the tables should exist in the same source connection. However, with a Joiner transformation you can join two relational tables from different source connections.
What is the difference between source qualifier and filter transformation?
Source Qualifier reduces the number of rows used throughout the mapping and hence it provides better performance. The filter condition in the Source Qualifier transformation only uses standard SQL as it runs in the database. Filter transformation filters rows coming from any type of source system in the map-ping level.
What is application source qualifier transformation in Informatica?
The Application Source Qualifier transformation is an active transformation that represents the rows that the PowerCenter Integration Service reads when it runs the session. … If you configure the Designer to create a source definition without a source qualifier, you can create the Application Source Qualifier manually.
Which property makes source qualifier transformation as an active transformation?
The source qualifier transformation is an active,connected transformation used to represent the rows that the integrations service reads when it runs a session.
Source Qualifier Transformation Properties:
|Select Distinct||To select only unique rows from the source.|
What is the difference between Joiner and lookup transformation in Informatica?
A joiner is used to join data from different sources. lookup is used to get related values from another table or check for updates etc in the target table.
What is lookup transformation in Informatica?
The Lookup transformation returns the result of the lookup to the target or another transformation. You can configure the Lookup transformation to return a single row or multiple rows. When you configure the Lookup transformation to return a single row, the Lookup transformation is a passive transformation.
What is a source qualifier?
Source Qualifier is a kind of Transformation used to grab data from relational/flat file source and route source data to downstram Transformation in mapping. In case xml source, XML Source Qulifier would be utilized, and cobol source would be done by Normalizer transformation.
Why source qualifier is active transformation in Informatica?
The source qualifier transformation is active and connected. It is used to represent the rows that the integrations service reads when it runs a session. We need to join the source qualifier transformation with the relational or flat file definition in a mapping.
What is the use of router transformation in Informatica?
The Router transformation is an active transformation that you can use to apply a condition to incoming data. passes the row multiple times. You can either drop rows that do not meet any of the conditions or route those rows to a default output group.
Can we run mapping without source qualifier?
Hi Raghu, You cannot develop a mapping without source.
How do you select distinct records from source qualifier in Informatica?
To use Select Distinct:
- In the Mapping Developer, edit an Application Source Qualifier transformation, and select the Properties tab.
- Check Select Distinct.
- Click OK to close the dialog box and save your changes. The Designer adds SELECT DISTINCT to the default query.
What is the default join in source qualifier transformation?
Inner equi join.