GeekInterview.com
   Home |  Tech FAQ  |   Interview Questions |  Placement Papers |  Tech Articles |  Learn |  Freelance Projects |  Online Testing |  Geeks Talk |  Job Postings |  Knowledge Base | Site Search |  Add/Ask Question

  GeekInterview.com  >  Tech FAQs  >  DataStage

 Print  |  
Question:  Sparse Lookup and Normal Lookup

Answer: What are the differences between Sparse Lookup and Normal Lookup?


April 04, 2008 05:40:42 #1
 nagoosk Database Expert  Member Since: November 2007    Total Comments: 13 

RE: Sparse Lookup and Normal Lookup
 
Normal Lookup:In this when ever ds wants to look up it just place the target table data into buffer.

Sparse Lookup:To look up itr fires an sql query to the database instead of placing into buffer.To use sparse look up your target database must be larger than source table and your target should be a database of any type.
     

 

Back To Question