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"free" ip number when I remove device from database, not delete?
Win 7, access 2007 , tables: device and ip, relation (device.ipIP,
foreign)one-to-one(ip.ID, primary) when I delete an device from device table using form it is also deleted from IP table. This should work such as the IP address remains to be used in other device . How to resolve this? If I change the relation there is no more validatation that one IP address is used once. I want to "free" ip number when I remove device from database so IP number is not deleted and can be used later. How to accomplish this? In relation the cascading is turned off - no help referential integrity turned off - no help relation deleted, it still removes row from IP table when I remove one device using the form. In the form the dropdown control looks for "free" addresses as follows: SELECT tblIP.ID, [ip] & "." & [ip2] & "." & [ip3] & "." & [ip4] AS [IP- number], tblDevice.ipID FROM tblIP LEFT JOIN tblDevice ON tblIP.ID = tblDevice.ipID ORDER BY tblIP.ip, tblIP.ip2, tblIP.ip3, tblIP.ip4 WHERE (((tblDevice.ipID) Is Null)); I don't want to delete IP address from tblIP, tried to make lookup table from IP table without relation, no help? how to make make sure that each ip address is used only once then? tblIP structu ID(primary),ip, ip2, ip3, ip4. I deleted the relation and drag from IP table (ID, primary key) to device table (ipID, foreign key) but it still removes the related IP row when I remove row from device table. When I try to drag from device table it gives me error (not originally in english) like "field name in index or relation definition "id" is not valid" What to do? Help me, Please! |
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"free" ip number when I remove device from database, not delete?
There is an active thread on this same topic in the Forms group.
Sandroid wrote: Win 7, access 2007 , tables: device and ip, relation (device.ipIP, foreign)one-to-one(ip.ID, primary) when I delete an device from device table using form it is also deleted from IP table. This should work such as the IP address remains to be used in other device . How to resolve this? If I change the relation there is no more validatation that one IP address is used once. I want to "free" ip number when I remove device from database so IP number is not deleted and can be used later. How to accomplish this? In relation the cascading is turned off - no help referential integrity turned off - no help relation deleted, it still removes row from IP table when I remove one device using the form. In the form the dropdown control looks for "free" addresses as follows: SELECT tblIP.ID, [ip] & "." & [ip2] & "." & [ip3] & "." & [ip4] AS [IP- number], tblDevice.ipID FROM tblIP LEFT JOIN tblDevice ON tblIP.ID = tblDevice.ipID ORDER BY tblIP.ip, tblIP.ip2, tblIP.ip3, tblIP.ip4 WHERE (((tblDevice.ipID) Is Null)); I don't want to delete IP address from tblIP, tried to make lookup table from IP table without relation, no help? how to make make sure that each ip address is used only once then? tblIP structu ID(primary),ip, ip2, ip3, ip4. I deleted the relation and drag from IP table (ID, primary key) to device table (ipID, foreign key) but it still removes the related IP row when I remove row from device table. When I try to drag from device table it gives me error (not originally in english) like "field name in index or relation definition "id" is not valid" What to do? Help me, Please! -- Message posted via AccessMonster.com http://www.accessmonster.com/Uwe/For...esign/201005/1 |
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