Subject Re: [IBO] Last edited by...
Author Helen Borrie (TeamIBO)
At 06:32 PM 12-01-02 +0000, you wrote:
>I need some kind of modification recording for every table. A user
>must be able to see who last edited a certain record in a certain
>table, and when. I was thinking of placing edited and editedby fields
>in every table and then use UPDATE and INSERT triggers to update the
>data. The problem is that there will be a huge number of triggers if
>I do so. Are there any other options?

Delegating this recording to one logging table is one option, as suggested by Thomas S. You sometimes have other potential application requirements that make this a very elegant approach, too. (Thomas, if IBLogManager doesn't use triggers, I'd be very interested in getting a process description for the FAQ...)

Just on the subject of triggers: to me, they are the arteries of a RDBMS. If you define foreign keys with cascades, the database will create triggers that are normally invisible to you. I consider the coding time spent writing them is paid back in Spades.

Sure, I'm the first to agree that it's tedious to have to write triggers for a lot of tables but, for your task, provided you use the same names for the two columns database-wide, you really only have to write two "boilerplate" triggers and copy/paste in your script. In fact, I can see how easily we could modify IB_SQL to provide a neat little interface in the script tool, to do just this.

Just my 0.02 AUD...

Helen Borrie (TeamIBO Support)

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