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Tracking table in Access

Posted on 2000-04-24
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Last Modified: 2010-05-02
Ok here is my question:
I have an access application that I use to enter sensitive information. If somebody makes a change to one record I want to be able to track the field that was changed the user name of the person who logged on to my database and the change made. I want to create a table that gets this information thru vb code or queries. Please send me sample code assuming a simple record with name, age, DOB fields and the mechanism to track changes to this record. Remember I need to know who did it, when, what fields were changed and what were the old and new values for those fields. thanks
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Question by:jorgito4
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5 Comments
 
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Expert Comment

by:mark2150
ID: 2745141
I did this by adding a memo field to the data record. When you populate the fields place the *same* data into the .Tag of the control as you put in the .Text. Then at save time you watch to see if .Text=.Tag, if they don't, then you know that particular field has been updated. I then just add the info to the start of the memo field with something like:

DIM obj as Object
'
for each obj in Form.Controls
if typename(obj) = "TextBox" then
  if obj.text <> obj.tag then
    RS!memo = "Data Field" & obj.name & "changed from: " & obj.tag & " to: " & obj.text & " by: " & user & " on: " & format(now, "hh:mm dd-mmm-yy") & rs!memo
  endif
  '
endif
'
next obj

This is off the top of my head, but I have written this (the code is at home) and it DOES work.

M
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Author Comment

by:jorgito4
ID: 2748429
I believe you understood what i am ying to do very well but i did not quite get the idea. Please clarify when you say:
1)"adding a memo field to the data record"
you mean adding a field to let's say the customer table that i am trying to track.
2)"populate the fields" means adding a new member right?
3)*same* what does this mean?
4)".Tag of the control as you put in the .Text" what control?, are you talking about the same text box where i am entering data?
5)Do you place the code that you gave me on the general section of the code window?
Thanks!!!!
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LVL 12

Accepted Solution

by:
mark2150 earned 50 total points
ID: 2748674
1) Yes
2) When you fill your screen with data from the record you do:

Text1.Text = Trim("" & RS!Fieldname)
Text1.Tag = Text1.Text

3) Same means *same*
4) Yes
5) No, code goes in click event of [Update] button

M
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Author Comment

by:jorgito4
ID: 2751352
Very helpful and knowledgeable. Excellent help.
Thank you Mark.
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LVL 12

Expert Comment

by:mark2150
ID: 2751404
Thank you for the lovely points. They look really nice over the mantle. (grin)

M
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