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Thank you very much .<br />
It will work but I was looking for simpler solution like in &quot;Northwind&quot; &nbsp;where price is kept in table Products but if there is new price in table OrderDetails both(old and new) are being kept. I hope my comment made some sense to you
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Please see the second paragraph in my comment <a href="http:#a39171150" rel="ugc">http:#a39171150</a>. &nbsp;What I discussed there is the same thing as you cite from the Northwind sample database.
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Thank you. I will try to &quot;break down&quot; the details form Nortwind sample database in order to try to figure it out.
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it seems that you solution <a href="http:#a39171150" rel="ugc">http:#a39171150</a>. is bit too much for me at this time. would you be able to advise me where i could &nbsp;see recommended solution done step by step ?
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I wish to make sale database ( see attached testdb) . Problem is that when I change price of products in tblProducts , value of field price changes in all records ( new and previous) in qrySalesdetails . <br />
I need advice as what I should do to keep saved records of sales with new and old prices .<br />
<br />
While awaiting your reply,<br />
Kind regards,<br />
<a href="https://filedb.experts-exchange.com/incoming/2013/05_w20/654722/DatabaseTest.accdb" target="_blank" class="file-inline" title="testDatabase (572 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>DatabaseTest.accdb</a>
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DatabaseTest.accdb

I wish to make sale database ( see attached testdb) . Problem is that when I change price of products in tblProducts , value of field price changes in all records ( new and previous) in qrySalesdetails . 
I need advice as what I should do to keep saved records of sales with new and old prices .

While awaiting your reply,
Kind regards,

Thank you very much .
It will work but I was looking for simpler solution like in &quot;Northwind&quot;  where price is kept in table Products but if there is new price in table OrderDetails both(old and new) are being kept. I hope my comment made some sense to you

Please see the second paragraph in my comment http:#a39171150.  What I discussed there is the same thing as you cite from the Northwind sample database.

Thank you. I will try to &quot;break down&quot; the details form Nortwind sample database in order to try to figure it out.

it seems that you solution http:#a39171150. is bit too much for me at this time. would you be able to advise me where i could  see recommended solution done step by step ?

locked value

Microsoft applications include a variety of software programs, including development and digital authoring programs (Expression and Media Center), educational programs, Internet software, including Essentials, Skype and the Live family, anti-virus, productivity applications and suites like Office, Excel, Word, Outlook, Access and PowerPoint, video games and server applications such as Exchange, SharePoint, IIS and Virtual Server.

Microsoft Applications

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

Microsoft Access is a rapid application development (RAD) relational database tool. Access can be used for both desktop and web-based applications, and uses VBA (Visual Basic for Applications) as its coding language.