 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
MS Access Forum / Database Design / April 2005Duplicate values
Hi, I have a table containing customer information. The unique value consists of a customer ID like this, 000000-0000, and it has been set it to Indexed - no duplicates allowed. This table is related to another table with more specific information, orders and the like. However, against the rules, I can enter duplicate values with the same customer ID already existing in that table. How could this happen? Hope someone could help me.  SignatureStef Which table can you enter duplicate values in? The first one or the other one? SignatureLynn Trapp MS Access MVP www.ltcomputerdesigns.com Access Security: www.ltcomputerdesigns.com/Security.htm Jeff Conrad's Big List: www.ltcomputerdesigns.com/JCReferences.html > Hi, > [quoted text clipped - 7 lines] > duplicate values with the same customer ID already existing in that table. > How could this happen? Hope someone could help me. The first one, i.e. the 1 in the "1 to many" relationship. This table shall not contain duplicate values. Stef "Lynn Trapp" skrev: > Which table can you enter duplicate values in? The first one or the other > one? [quoted text clipped - 10 lines] > > duplicate values with the same customer ID already existing in that table. > > How could this happen? Hope someone could help me. hmmmmmmmm....interesting situation. How have you verified that you are actually getting duplicates? SignatureLynn Trapp MS Access MVP www.ltcomputerdesigns.com Access Security: www.ltcomputerdesigns.com/Security.htm Jeff Conrad's Big List: www.ltcomputerdesigns.com/JCReferences.html > The first one, i.e. the 1 in the "1 to many" relationship. This table > shall [quoted text clipped - 22 lines] >> > table. >> > How could this happen? Hope someone could help me. I entered a new record using an existing customer ID. And it was accepted! although I designed the customer ID to be indexed and no duplicates should be allowed. On the other hand I was not permitted to delete any of the other entries because of the relation to "many"-side table. Stef > hmmmmmmmm....interesting situation. How have you verified that you are > actually getting duplicates? [quoted text clipped - 25 lines] > >> > table. > >> > How could this happen? Hope someone could help me. Let me try to reword the question a bit. You said that this field has values entered in the following format: 000000-0000. I am assuming this is a text field. Are you absolutely certain that the values you think are duplicates are actually duplicates? What have you done to verify that is the case? '123456 -789' and '123456-789' are very similar, but are not duplicates. SignatureLynn Trapp MS Access MVP www.ltcomputerdesigns.com Access Security: www.ltcomputerdesigns.com/Security.htm Jeff Conrad's Big List: www.ltcomputerdesigns.com/JCReferences.html >I entered a new record using an existing customer ID. And it was accepted! > although I designed the customer ID to be indexed and no duplicates should [quoted text clipped - 34 lines] >> >> > table. >> >> > How could this happen? Hope someone could help me. |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.