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Asked: 2026-05-11T15:39:07+00:00

I would like to save some user-specific data in my iPhone app. I was

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I would like to save some user-specific data in my iPhone app. I was looking at the SQLite sample, and it is using something similar to this:

NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask ,YES ); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:dbName];

What I would like to know is, is ‘writableDBPath’ unique for my app? Is there a risk that my ‘dbName’ will clash with another file of the same name used by another app?

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  1. On the iPhone, they are unique because of the application sandboxing that’s done. On a regular mac, however, the NSDocumentDirectory is only unique to a user and if you don’t make the file somehow unique or creating an application-specific sub-directory, you could get a name clash, so just be careful of that if you ever go from iPhone to Mac.

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