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Subject: 
Re: Online LEGO Inventory Database
Newsgroups: 
lugnet.db.brictionary
Date: 
Thu, 10 Feb 2000 00:20:59 GMT
Viewed: 
8588 times
  
In lugnet.db.brictionary, Steve Bliss writes:
> In lugnet.db.brictionary, Steve Hodge wrote:
> > > The core element table should have an abstract key value, and a pointer to a
> > > graphic image for each part.  A second table, call it Descriptions, would • have
> > > the various descriptions for the part and the key back to the core element
> > > table.
> > 
> > Yep.
> 
> Oh, and each description should probably be tagged with a source.  That way,
> when we change the description of some part in LDraw, the cross-reference
> database can be updated.

I'd thought about this earlier, but forgot to mention it.

> > > > Some sort of searching (or at least heirarchical arrangement) of parts • based
> > > > on attributes/description of the part would also be necessary (it's not
> > > > pleasant to have to wade through huge numbers of pictures looking for the • part
> > > > you want). There's another thread about just this.
> > > 
> > > Pictures are going to be the ultimate ID method for parts.  Having a small
> > > number of categories or types would allow easier access to the pictures. • Once
> > a
> > > number of descriptions are collected, a text search function is possible.
> > > 
> > > Look at <http://www.lugnet.com/cad/ldraw/parts/ref/> for ideas on organizing • and
> > > searching.  Some stuff there works well, some doesn't.
> > 
> > That's the problem with just having categories of pictures. For some pieces
> > it's difficult to decide on which category it should be in.
> 
> Yep.  A better approach may be modeling a set of properties.  So a plate with
> holes in it could have both the Technic and Plate properties.  This would • avoid
> requiring a hierarchical classification (is that redundant?) system.

Yeah, I agree. One of the other threads had come to the same conclusion and
are curently trying to decide exactly which properties would be necessary.

> This is probably better described by some fuzzy-logic concepts of which I know
> little.

Likewise.

Regards,
Steve Hodge



Message has 1 Reply:
  Re: Online LEGO Inventory Database
 
(...) Having a good list of properties at the start is a good idea, but don't hard-code specific properties into the schema. It's just a many-to-many relation between parts and properties. Assuming a relational approach. Steve (27 years ago, 10-Feb-00, to lugnet.db.brictionary)

Message is in Reply To:
  Re: Online LEGO Inventory Database
 
(...) Yep. (...) Oh, and each description should probably be tagged with a source. That way, when we change the description of some part in LDraw, the cross-reference database can be updated. (...) Yep. A better approach may be modeling a set of (...) (27 years ago, 9-Feb-00, to lugnet.db.brictionary)

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