Re: Garbage Collection

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On Thu, Feb 05, 2009 at 02:48:14PM -0500, tedd wrote:

> At 7:03 PM +0000 2/5/09, Nathan Rixham wrote:
>> IMHO forget the active flag, replace it with a field "deleted" which
>> is a timestamp, then you've got an audit trail of when the it was
>> removed :)
>>
>> infact often seen three fields on every table, "inserted, updated
>> and deleted" all timestamps and self explanatory.
>
> Nathan:
>
> As usual, you (and others on this list) have clarity on this.
>
> I think I'll go your route except I'll have a "date created" and
> "date inactive" field but not a "date updated" field.
>
> In this situation there would never be a reason for an update. After
> all, the tutor_course record is created when an assignment is made --
> when the assignment is broken, then the record becomes inactive. So,
> there's no reason to update. "Do, or don't do, there is no try." --
> Yoda

Actually, if I needed a history, I wouldn't do it with timestamp fields
in the table. I'd build a new file that contained the history. Maybe

when timestamp
operation char(1)
what char(1)
which id

Paul

-- 
Paul M. Foster

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