[Digikam-devel] [Bug 277242] After SQLite --> MySQL conversion, digikam reports error regarding DBThumbnailsVersion on start up.

Francesco Riosa francesco+kde at pnpitalia.it
Sun Jul 10 21:57:55 BST 2011


https://bugs.kde.org/show_bug.cgi?id=277242





--- Comment #7 from Francesco Riosa <francesco+kde pnpitalia it>  2011-07-10 20:57:55 ---
(In reply to comment #6)
> Francesco,
> 
> The reason why thumbs are stored in a separated DB file is file size, which can
> be huge with large collection. 
> 
> Users what to be able to manage where thumb DB will be stored to not fill a
> lots the hard drive. 
> 
> In this DB we use wavelets compression to optimize size. Thumbs size is
> 256x256. Imagine the DB size for 200K, or 400K items ?
> 
> Gilles Caulier

This is correct for sqlite for many reasons, but a mysql database is quite a
different beast, has I've said before it can be useful to use different _types_
of databases for images and thumbs (also a filesystem based one came in mind),
but using different schemas in mysql give no performaces or safety gains

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