Publish An Application Update On Android - Market Without Deleting Local Database And Local Files

I published an application that stores data in a local database.

Now I have to publish an update to this application to fix开发者_Go百科 some little bugs, but I am afraid that downloading and installing the update will delate the local database associated with the previous version.

I would like to know how the update system works. Will installing an update completely delete all the apk, files, databases associeted with the previous version?

If so, how can I avoid this in my code?

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iShader, updates to an existing app in android market does not delete or alter the database (sqlite files), shared preferences or other files created using Android data Storage.

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I think you have to change the application version number in the manifest file.