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  • Which transformation should we use to normalize the COBOL and relational sources? view answer
  • Difference between static cache and dynamic cache? view answer
  • What are the join types in joiner transformation? view answer
  • In which condtions we can not use joiner transformation(Limitaions of joiner transformation)? view answer
  • What is the look up transformation? view answer
  • What are the diffrence between joiner transformation and source qualifier transformation? view answer
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  • How can you improve session performance in aggregator transformation? view answer
  • Can you use the maping parameters or variables created in one maping into any other reusable transformation? view answer
  • What is meant by lookup caches? view answer
  • What is source qualifier transformation? view answer
  • How the informatica server increases the session performance through partitioning the source? view answer
  • What are the settiings that you use to cofigure the joiner transformation? view answer
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  • What is aggregate cache in aggregator transforamtion? view answer
  • How can you recognise whether or not the newly added rows in the source are gets insert in the target? view answer
  • What are the types of lookup? view answer
  • What are the types of metadata that stores in repository? view answer
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  • Name some measures in your fact table? view answer
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  • What is the daily data volume (in GB/records)? What is the size of the data extracted in the extraction process? view answer
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  • Whether are not the session can be considered to have a heterogeneous target is determined? view answer
  • Under what circumstance can a target definition are edited from the mapping designer. Within the mapping where that target definition is being used? view answer
  • Can a source qualifier be used to perform a outer join when joining 2 database? view answer
  • If u r source is flat file with delimited operator.when next time u want change that delimited operator where u can make? view answer
  • If index cache file capacity is 2MB and datacache is 1 MB. If you enter the data of capacity for index is 3 MB and data is 2 MB. What will happen? view answer
  • Difference between next value and current value ports in sequence generator? view answer
  • How does dynamic cache handle the duplicates rows? view answer
  • How will u find whether your mapping is correct or not without connecting session? view answer
  • If you are using aggregator transformation in your mapping at that time your source contain dimension or fact? view answer
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  • Are you involved in high level r low level design? What is meant by that high level design n low level design? view answer
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  • How is the Sequence Generator transformation different from other transformations? view answer
  • What are the advantages of Sequence generator? Is it necessary, if so why? view answer
  • What are the uses of a Sequence Generator transformation? view answer
  • What is Sequence Generator Transformation? view answer
  • What is the difference between connected lookup and unconnected lookup? view answer
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  • What are the tools provided by Designer? view answer
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  • I have the Administer Repository Privilege, but I cannot access a repository using the Repository Manager. view answer
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  • I created a new group and removed the Browse Repository privilege from the group. Why does every user in the group still have that privilege? view answer
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  • When should you create the dynamic data store? Do you need a DDS at all? view answer
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  • What are different kinds of repository objects? And what it will contain? view answer
  • What are different kinds of repository objects? And what it will contain? view answer
  • What is a repository? view answer
  • What are the new features and enhancements in PowerCenter 5.1? view answer
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  • Why do we need SQL overrides in Lookup transformations? view answer
  • What is session? view answer
  • What is workflow? view answer
  • What is worklet? view answer
  • Which ETL tool is more preferable Informatica or Data Stage and why? view answer
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  • What is the use of auxiliary mapping? view answer
  • What is authenticator? view answer
  • How do we create primary key only on odd numbers? view answer
  • What is the difference between source qualifier transformation and application source qualifier transformation? view answer
  • What are the types of loading in Informatica? view answer
  • What is the use of control break statements? view answer
  • What is the difference between active transformation and passive transformation? view answer
  • What are the various types of transformation? view answer
  • What is the use of tracing levels in transformation? view answer
  • What is the difference between a Database and a Datawarehouse? view answer
  • What are the different types of OLAP TECHNOLOGY? view answer
  • What is Data Modeling? What are the different types of Data Modeling? view answer
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  • What is cube? view answer
  • 1. What is a Data warehouse? view answer

!!! Informatica Frequently Asked Questions !!!

What are the diffrence between joiner transformation and source qualifier transformation?

!!!Answer!!!- From Technical Expert

1. Source Qualifier Operates only with relational sources within the same schema. Joiner can have either heterogenous sources or relation sources in different schema 2. Source qualifier requires atleats one matching column to perform a join. Joiner joins based on matching port. 3. Additionally, Joiner requires two separate input pipelines and should not have an update strategy or Sequence generator (this is no longer true from Infa 7.2).

1)Joiner can join relational sources which come from different sources whereas in source qualifier the relational sources should come from the same data source. 2)We need matching keys to join two relational sources in source qualifier transformation.Where as we doesn?t need matching keys to join two sources.

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Answer : in soure qualifier transformation supports only homogenious database its defaltly equi join or inner join
in joiner transformation supports homo genious and hetrogenius databases
in joiner t/r normal join


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Answer : What do we refer by matching key in below answer ??
"We need matching keys to join two relational sources in source qualifier transformation.Where as we doesn?t need matching keys to join two sources. "


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