> I am familiar with neither SQLDatabase nor sqlalchemy (just know they
> exist). So, what are advantages or disadvantages?

Neither am I, but can I suggest a database, modeled perhaps on David  
Kohel's marvelous genus 2 invariants database at 
http://echidna.maths.usyd.edu.au/kohel/dbs/ 
  and specifically 
http://echidna.maths.usyd.edu.au/kohel/dbs/complex_multiplication2.html 
.

I have written simple sage code to interface to his webpages, but  
that's the easy part :)  I think you will find a web interface is much  
more useful than a *giant* download for the true acolytes.

> And is 20GB of data too much for an spkg?

Yes.  Suppose you'd like to know all cohomology rings of depth 1 -- do  
you want to download 20GB to find out there's only one or the  
equivalent?  A web interface is much more valuable to a casual user.

Nick

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