Developing a HTML5 offline storage solution for iOS/Android in 2011

Question

The problem:

I need a device agnostic (e.g. HTML5) solution for storing and querying 250,000+ rows of data offline on a phone or tablet type device (e.g

Answer 1

I've made some more research while looking for a solution for my own project. It looks like this library is rather promising: http://nparashuram.com/IndexedDBShim/

It allows to use IndexedDB API having WebSQL behind the scenes.

It's tests pass on recent iPad, iPhone 5, Android 4.2.2.

Hope this helps someone.