CoreData and pre-filled DB

I need to prepare my IOS application with a Pre-filled DB. I'm wondering whether my technique is good of if it leaks in something:

1. At the first App launch: Call a function that fill data in DB, only if field "DB_filled" in property list is equal to "NO".
2. When function comple开发者_Go百科tes and data is stored in DB: setup plist with "DB_filled" => YES.
3. At the next App launch: DB_filled is equal to YES, thus, no other attempts to pre fill Db are done.

I'm not sure this's the correct technique. What do you think?

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This is most common scenario for first-launch app setup except for variances in key name (firstLaunch, FirstLaunch or SetupDone, or, in your case, DB_filled). Check this question too.