Re: Is this correct OO design?

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No it's not a concurrency-related issue. I have a news portion of my
web app. where each news article has the potential for a document
library associated with it. if the user creates a press release and
wants to upload related documentation, they have the ability to do so.

there's 3 areas that potentially must be modified when an article has
changed:

1. Articles Table: housing all data related to article itself
Fields include: (title, summary, body, opendate, closedate,
DepartmentName, DocLibraryID (see 2.), etc...

2. DocLibrary Table: housing all documents (if any) associated with a
given article.
Fields include: (ArticleID, FilePath, other irrelevant fields)

3. Physical Directory where docs are stored.

when the article is updated - I assuming it's the proper way of doing
so - I start my changes from the bottom up in steps 3-2-1 fashion.

I my example I need to check if the user has modified the article to
display under a different department or has changed its display date.
This will effect the physical path to the article's document library.

for example:
Original article: Created for "Public Relations" on January 31, 2005
path: /Docs/News/PublicRelations/2005_01_31/

Updated article: Moved to "General News" on April 15, 2005
new path: /Docs/News/GeneralNews/2005_04_15/

.