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stats:proc:addparticipant [2012/01/11 14:40] Patrick Michel |
stats:proc:addparticipant [2012/06/06 15:32] Patrick Michel |
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assume exists //exams/exam[id]; # implicitly true in OO implementations | assume exists //exams/exam[id]; # implicitly true in OO implementations | ||
- | assume exists //accounts/account/student[studentId]; | + | assume count (studentId, //accounts/account/student/id) = 1; |
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assume not exists //exams/exam[id]/results/participant[studentId]; | assume not exists //exams/exam[id]/results/participant[studentId]; |