Best answer: Why Filter transformation is used in Informatica?

Why filter is an active transformation?

A transformation can be active or passive. … For example, the Filter transformation is active because it removes rows that do not meet the filter condition. A passive transformation does not change the number of rows that pass through the transformation.

What is the difference between filter and expression transformation in Informatica?

The only difference is, filter transformation drops the data that do not meet the condition whereas router has an option to capture the data that do not meet the condition. It is useful to test multiple conditions. It has input, output and default groups. … Connect a router transformation to expression.

Is filter transformation is case sensitive?

The filter condition is case sensitive. To maximize session performance, keep the Filter transformation as close as possible to the sources in the mapping. Rather than passing rows that you plan to discard through the mapping, you can filter out unwanted data early in the flow of data from sources to targets.

Why sorter is active transformation in Informatica?

Why is Sorter an Active Transformation? This is because we can select the “distinct” option in the sorter property. … The number of Input Rows will vary as compared with the Output rows and hence it is an Active transformation.

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What does filter do in Informatica?

A filter condition is an expression that returns TRUE or FALSE. When the filter condition returns TRUE for a row, the Filter transformation passes the row to the rest of the data flow. When the filter condition returns FALSE, the Filter transformation drops the row.

What is the difference between router and filter transformation?

Router transformation provides us the facility to capture the rows of data that do not meet any of the conditions to a default output group. A Filter transformation tests data for one condition and drops the rows of data that do not meet the condition. … Filter is single input and single output group transformation.

How do you give filter condition in filter transformation?

In order to filter the records by an expression, filter Transformation requires some data. So, we have to connect the Source definition with the transformation using Autolink.. option (or select and Drag required fields). Double click on the Filter transformation to provide the filter condition.

Can we give multiple condition in filter transformation?

To allow multiple filter condition, the router transformation provides group option. For every filter condition, an output group is created in router transformation. You can connect different targets to these different groups.

What is the use of sorter transformation in Informatica?

Sorter transformation in Informatica is used to sort the data in an ascending or descending order based on single or multiple keys. This is the type an active transformation which sorts the data either in ascending order or descending order.

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What is normalizer transformation in Informatica?

The Normalizer transformation is an active transformation that transforms one incoming row into multiple output rows. … When the Normalizer transformation returns multiple rows from an incoming row, it returns duplicate data for single-occurring incoming columns.

Is Lookup transformation active or passive?

When you configure the Lookup transformation to return a single row, the Lookup transformation is a passive transformation. When you configure the Lookup transformation to return multiple rows, the Lookup transformation is an active transformation. You can use multiple Lookup transformations in a mapping.