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Name of Solution:

Mapping : Pushdown Connected Lookup

Business Requirement:

Mapping sample that demonstrates how to implement Pushdown Optimization(PDO) in a

mapping with connected lookup transformation.

Solution URL:

https://community.informatica.com/solutions/2270

Supported Versions:

PowerCenter 9.1 and 9.5

Description:

When you run a session configured for pushdown optimization, the Integration Service

translates the transformation logic into SQL queries and sends the SQL queries to the

database. The source or target database executes the SQL queries to process the

transformations.

The download contains a mapping which uses a connected look up to populate columns in

the target table.

Implementation details:

The mapping contains one relation source (EMPLOYEES) and one relational target

(EMPLOYEES_JOB_DESC).

Both source and target are present in the same database

Insert records into the target EMPLOYEES_JOB_DESC for each row present in source

EMPLOYEES. Populate the target column JOB_DESC using a connected look up on the table

JOBS

Pushdown optimization is enabled in the session and the mapping is executed as a single

SQL query in the database.

Download file contents:

1.  Workflow

2.  Script

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Steps to implement the solution:

1.  Execute the script to create the source, look up and target tables as well as data.

2.  Import workflow using the Repository Manager. Select the appropriate folder from

the repository and resolve the conflicts by choosing suitable option.

3.  In the PowerCenter Designer, Observe the look up transformation as shown below.

4.  Open the workflow in Workflow Manager. Assign the integration service in Workflow -

> Edit -> Integration Service

5.  Edit session and assign valid connection object for the source and target.

6.  For more details of importing object please visit our YouTube link.

7.  Observe the pushdown optimization details as shown below. Transformations which

are included into pushdown are noted by “1”. Since it is full pushdown, all

transformations are included. SQL Query, shown at last pane, will be executed on

the database.

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8.  Execute the workflow and observe the result in the target table. Observe the

workflow log as shown below.

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YouTube Video on Importing and Configuring Workflows:

http://www.youtube.com/playlist?list=PLLRreK2jjjgWBQ4NPfp0QWTxYDvlnEqSJ 

Other Useful links:

Mapping Bundles

Workflow Bundles

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Debugging Tools Bundles

Visio Templates Bundles

B2B Templates and Projects Bundles

Data Quality Packs and Plans Bundles

Script Bundles