[Ken Maltby]

Hmm... I thought TOC (Table of Contents) for epubs were constructed within the epub.

The reading software (Adobe Reader Mobile) would be extracting, using and presenting the TOC already in the epub. Just extracting the data contained in the TOC, for the database, when first accessing the file should be instantaneous by human perceptions.

I completely miss whatever logic there would be for having data from each "split" in the
database, at all. They are accessed sequentially by the reading software and are indexed for random page access, already. I doubt very much that Adobe made a special reader program that uses Kobo's database, for anything.

Luck;
Ken