Storing files in FM Database

I had earlier inquired about inserting files in FM DB, see link below.

http://www.experts-exchange.com/Databases/FileMaker/Q_21872743.html

The following was suggested:

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This problem can be alleviated by using a check-out//check-in system, where the user "requests" to export the document, and it is then flagged as "locked", so no other users can access it until the first user finishes with it and replaces it. This is a bit more complex to set up, but it's not unreasonable, it just requires some scripting of the user interface.

The biggest problem with storing the files in the database itself is how much this will increase the size of the database files and affect performance. If the files are mostly small, it may not be a problem, but if you're dealing with huge desktop publishing files, for example, it's probably not worthwhile.

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I'm not worried about increasing the size of the database since it will only host files for open/active jobs (not more than 100 word or pdf documents).  I'm looking for help with the "check-out/ check-in system" described above.

Thanks.

davidatlamontAsked:
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lesouefConnect With a Mentor Commented:
If you intend for instance to let the user open the file by clicking on its name, just modifiy the image box as a button which changes the flag "busy/locked" and then opens the file. If the flag is already busy, then issue a msg saying it is... You then need another kind of validate button to reset the flag for further use. But why do you need this?? If the file is in a media field, it will be locked if somebody opens it anyway, as it does with any field.
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davidatlamontAuthor Commented:
Let me state the basic need.  I have a job db that I would like to be able to add job materials (normally a word or pdf document) to so that various users can acess/edit while maintaining version integrity.  My understanding was that I should use a Container field to store the file (I want the actual file stored and not just a reference).  Am in confused?
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lesouefCommented:
no, this is correct.
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