Why we choose to use the local database for wp8?

I have some apps, all face the same problem, much data is saved in the runtime memory, it really bad for saving device resources. So I just would like to know if I transfer the data into the local database, is that helpful to save some more memory space,
after all the database is built in local file and access through the isolation storage. Could anyone tell me about how to save the memory space, I am now very tired to resolve those bugs caused by out of memory...
Help me please.

Hi Situdana,
Here are some scenarios.
For instance if you have a 10MB image stored in your local database, and you would like to display. Without load the whole image to the runtime memory you cannot display the image to your user, that means in this situation, runtime memory equals more or
less 10MB.
Another example could be you need to find some data in a 10MB data file, if the file is structured, using SQLite can help you reduce the time to search and use less runtime memory.
I don't know what kind of data you saving on the runtime memory, but looks like you can manually manage the memory for instance release some IDispose() driven class when you think they are un-necessary. We can only provide a really general suggestion to
you, for more information you can ref:
Developing apps for lower-memory phones for Windows Phone 8
--James
<THE CONTENT IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS OR IMPLIED>
Thanks
MSDN Community Support
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