Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Wed, 24 Jun 2009 @ 13:26:35 GMT


     
  <Prev Next>  
<<First
<Prev
Next> Last>>  


Subj:   Indexing Intersection (association) tables
 
From:   Goli, Srikanth

Hi --

I am looking for some feedback on indexing for intersection tables. Something like a, Student_Enrollment table, that is an intersection between a Student (PI - StudentID) table and a Course (PI - ClassID) table. Would I be better off with a combined Unique index of (StudentID, ClassID) OR a Non Unique PI of Student ID OR Course ID alone (to facilitate collocation/same amp join with either of these two tables) for the Student_Enrollment table. What are the factors to consider?


Thanks.



     
  <Prev Next>  
<<First
<Prev
Next> Last>>  
 
 
 
 
 
 
 
 
  
  Top Home Privacy Feedback  
 
 
Copyright for the TeradataForum (TDATA-L), Manta BlueSky    
Copyright 2016 - All Rights Reserved    
Last Modified: 27 Dec 2016