Hi Michael,

On Jun 23, 2011, at 9:36 AM, Starch, Michael D (388L) wrote:

> Brian Foster, Developers,
> 
> This question is regarding the work I am doing to develop the column based 
> database.  
> 
> As I understood it we created views joining the three tables (Metadata, 
> Reference, XREF) so that accesses to this data was at one central point,  and 
> the db handled the join.
> 
> As of now the code only uses the view to get a list of distinct productid 
> (which could be done easily with out the view) and where I believed the views 
> would help, the tables are accessed individually in sequence.  
> 
> Is this a result of unfinished migration to using views? or is there some 
> issue with using the views that I am missing.
> 
> Was the code designed to handle multiple references per product?  As I 
> understand it it is not...but I could be mistaken on this point.  If it does 
> not handle them, it should, correct (for hierarchical types)?

+1. The code should work for hierarchical types as well (aka multiple refs per 
product, and refs heirarchically organized within a particular directory 
structure).

Cheers,
Chris

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: [email protected]
WWW:   http://sunset.usc.edu/~mattmann/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

  • ColumnBasedDatabase Starch, Michael D (388L)
    • Re: ColumnBasedDatabase Mattmann, Chris A (388J)

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