When answering your other post I described a far easier method of updating library only metadata in iTunes. Simply link the files and do a Refresh Apple App. This will always work if you've configured the Auto-Export section of Preferences-Apple Apps. The refresh happens automatically every time you save a linked file. This means that if Auto-Export is configured, a save gets rid of the need for a refresh.

For those of you who may not have seen the other post, I suggest you read 'Working with Apple Apps - The Basics' which can be found in the documentation section of the resources page.

Querying a database can only be done in an action. There are quite a few sample actions which query databases. Go to the Sample Actions section of the resources page and do a text search for Database. The best reference is the help for action statements in the Database (Query) category.

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