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I don't know the product, but I'm guessing it's a tool that saves both the old and the new values. You already have a table - you can easily insert new values without ever touching the old ones. It won't be "as big" as any external audit, since any external data-file would have more overhead.
If your client needs to keep all historic values, then you simply don't update or delete.
Bastard Programmer from Hell 
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hi dear.
this is exact the tool that i wanna.this read .ldf(log) file of SQL and convert it to human Language.it exactly show the old values and new values both .i wanna to do this my self without buying it and i dont wanna that much info.
See can u give me something like that >
I know that u can do that cause ur expert in SQL.
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jojoba2011 wrote: hi dear
I'd like to suggest a more neutral greeting.
jojoba2011 wrote: See can u give me something like that
No, because the structure of the ldf-file isn't public. You'd still need to talk to Microsoft if you want to read the ldf-file. Or try and lull the company into handing you some help.
jojoba2011 wrote: I know that u can do that cause ur expert in SQL.
Nope; I can only give some options -
- You can do a real audit in Sql Server, not Sql Express
- You can trace, but that doesn't show the "old" values
- You can insert without update. Sounds wrong, but is often the best solution, since your table is the most optimized structure to hold that type of data.
- You could create triggers to copy both old and new values to some other table, which would be the complex version of the point above, without too much added value.
- You can change the datalayer of the code talking to your server, and have it log there.
- Talk to Microsoft
Bastard Programmer from Hell
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As Eddy has said, you need to address your requirements first! Attempting to retain every change, both from and to via the .ldf is not going to work. Eddies suggestion that you make copies of records instead of updating is valid (I have used this under duress), marking deleted records as Disabled is also a recognised solution.
Go back to your requirements and reassess them in the light of what you have learned over the last few weeks trying to use the wrong design to achieve a desired result.
Never underestimate the power of human stupidity
RAH
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As stated you are going at it from the wrong direction.
Other solutions include:
- using the OUTPUT Clause[^]
- using trigger[^]
both can track the data. If the code cannot be changed the trigger would be the way to go.
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What does the trigger-solution provide, besides extra trouble in maintainability? We're not synchronizing on every record, and he merely needs a duplicate. Changing the command being executed would be a tad more efficient than adding triggers here to copy each and every reveived value to another table (with the same structure).
Bastard Programmer from Hell
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Since you can put logic in a trigger to only pull what you want this could create the table of updated columns. I did say that trigger might be better if the main code could not be changed.
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I know that it's possible, the question was whether it would be a good idea 
..but agreed, if they can't change the application-code, then one would have to make a change in the database-server.
Bastard Programmer from Hell
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May I offer a possible solution, if all of the database actions are being "called" by a front end application then another method to maintain an audit trail is to simply append and database change details to a ascii log file (simple text file).
For example where I work if anybody makes a change to any database field the action is recorded also to the log file.
Then if we need to access who made the changes and what changes were made on any particular date in time, even years ago it's a simple matter to check the log file. When it get's too big archive it and start a new one. 
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Thanks all for Reply.
Can u give me a small example on how to do that?
I exactly wanna this.
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In this instance I'm recording the method of payment and amounts from each transaction.
If the log.txt file does not exist then create it, otherwise append to it.
You will notice this particular log file is called LogReturns.txt and it's in the root directory of the program executable.
Hope this is what you are looking for.
On Error Resume Next
Dim fso As New Scripting.FileSystemObject
Dim mFile As String
Dim txtfile As Object
mFile = "/LogReturns.txt"
If fso.FileExists(App.Path & mFile) Then
Set fso = CreateObject("Scripting.FileSystemObject")
Set txtfile = fso.OpenTextFile(App.Path & "/LogReturns.txt", ForAppending)
Else
Set fso = CreateObject("Scripting.FileSystemObject")
Set txtfile = fso.CreateTextFile(App.Path & "/LogReturns.txt", True)
End If
Dim mVar As Integer
txtfile.WriteLine (" ")
txtfile.WriteLine ("Receipt Number : " & recReceipt.Fields("ReceiptNum"))
txtfile.WriteLine ("Member Number : " & recReceipt.Fields("MembNum"))
For mVar = 0 To intMoviesReturnCount - 1
txtfile.WriteLine ("Movie Number(s): " & arrMoviesReturned(mVar))
Next mVar
txtfile.WriteLine ("Rec Date & Time: " & recReceipt.Fields("ReceiptDateTime"))
txtfile.WriteLine ("Amount Payable : " & Format(recReceipt.Fields("Amount"), "$0.00"))
' v1.0.159 : 26-Jul-2006 : JPG : Added CashNett value to report
txtfile.WriteLine ("Cash Nett : " & Format(recReceipt.Fields("CashNett"), "$0.00"))
txtfile.WriteLine ("Cash Tendered : " & Format(recReceipt.Fields("CashTendered"), "$0.00"))
txtfile.WriteLine ("Eftpos Selected: " & Format(recReceipt.Fields("Eftpos"), "$0.00"))
txtfile.WriteLine ("Cheque Provided: " & Format(recReceipt.Fields("Cheque"), "$0.00"))
txtfile.WriteLine ("Credit Card : " & Format(recReceipt.Fields("CreditCard"), "$0.00"))
txtfile.WriteLine ("GiftCard Used : " & Format(recReceipt.Fields("GiftCardUsed"), "$0.00"))
txtfile.WriteLine ("Discount : " & Format(recReceipt.Fields("Discount"), "$0.00"))
txtfile.WriteLine ("Transfer : " & Format(recReceipt.Fields("DebitMemberBalance"), "$0.00"))
txtfile.WriteLine (" ")
txtfile.WriteLine ("**************************************")
txtfile.Close
Set fso = Nothing
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thanks for ans.
But i wanna to get the info from my SQL database . i wanna to have every thing the user changed,Updated,Inserted,Deleted.
So i can trace that.
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Hi jojoba2011,
You get the values you need to save from the front end application, what I mean to say is the values you are using in the database insert or update query are also used for the text report audit trail. In the case of the original values that are being replaced, they are stored as a variable when the update/insert page is first populated.
Do you understand what I'm saying?
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first of all thanks for your attention!
Sorry i cant understand!
I think that u add values to txt when inserting them to Database.
Correct?
But i wanna to get it from DB.even if the text file deleted i can get info back.
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Yes that's right, you keep the values you are inserting/updating/deleting then call a routine to record the changes in the ascii text audit file.
Re Getting data from the DB, I'm sorry but I don't know how to retrieve data from SQLServer from past transactions, I'm sure it's possible from the transaction log. But in my circumstances it's been easier to just store the old values and new values when they happen to variables then send to the ascii log file.
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thanks!
but i wanna to have that .how to retrieve data from SQLServer from past transactions
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how i make the entity relation of "car selling and car purchase "
plz help me about this question
lsajidali@yahoo.com
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You draw an arrow from one entity to the other. Done.
Did you mean in code? What database-system? Here's one in SQL92;
CREATE TABLE Car
(
cId INTEGER,
Description CHARACTER VARYING(50),
PRIMARY KEY (cId)
)
CREATE TABLE CarPurchase
(
pId INTEGER,
boughtCar INTEGER,
PRIMARY KEY (pId),
FOREIGN KEY (boughtCar) REFERENCES Car
)
This syntax should work on most systems.
Bastard Programmer from Hell
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Hi all,
in my database table , i have one field (say field1) which contains the value like 1,2,3,10,11,20, a, b,c , 30, 40. I want to write a query which sore the result on the base of field1 and output should be like
1
2
3
10
11
20
30
40
a
b
c
whether it is possible through query or i need to adjust in code ?
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Yhat should be possible using a query. Add a computed field that indicates whether it's a number or a range of characters, and put that as the first column to sort on. Or check out the collations if you're on Sql Server - might be as easy as changing the setting and have the server order everything in the correct way for your locale.
Bastard Programmer from Hell
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An Excel sheet I was given to import to SQL Server today has some header rows (four of them) before the column header row. I did this with ADO.net and the OleDb classes. I was hoping that there was some Extended Property that would allow me to skip the first four rows, but I saw none. connectionstrings.com and other sources didn't show anything either, so I eventually bit the proverbial bullet and simply skipped the first four rows from the DataReader and used the Fxx column names.
It worked, but I figured I'd ask whether or not anyone here knows of such an Extended Property.
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None I know about, but you can select a range from the sheet like: SELECT * FROM [Sheet1$A4:F1243] Which could solve your problem.
But you would need to know, or find out, how many rows there are before doing the select.
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But could it then use the first row as column headers?
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OK, I'm just looking at this again, mainly for future reference (though I'll likely forget).
Thank you, yes, that works as described -- or very nearly. The problem is that the name of the sheet contains a SPACE and therefore has to be within apostrophes e.g. ['sheet 1$'] and I have been unable to get that to work with a range.
System.Data.OleDb.OleDbException (0x80040E37): The Microsoft Access database engine could not find the object ''Report 1$B5:AE5737''.
System.Data.OleDb.OleDbException (0x80040E37): The Microsoft Access database engine could not find the object ''Report 1$'B5:AE5737'.
Just for testing I renamed the sheet to remove the SPACE and it works. 
Do you have a work around for this?
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