Visual FoxPro. Creation of a restriction on input
Employer
[no-member:pro]Irina[/no-member:pro]Irina
Project parameters
Type of cooperationOne-time project
SectionSoftware development
Prepaymentprepayment is possible
Payment methodsElectronic money
Acceptance of requestsclosed
Project description
There's a replacement table. It has the id of the old meter and the id of the new meter. It is necessary to prevent the entry as a new id, id counter, which was already indicated in the field id of the old counter. For example, 1 - 2, and then 2 - 1. Or 1 - 2, 2 - 3, 3 - 1.
