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Betrachte folgende beiden parallele Datenbanksessions S0 und S1. Welcher Fehler...

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Betrachte folgende beiden parallele Datenbanksessions S0 und S1. Welcher Fehler tritt hier auf?

12345678910111213141516S0> BEGIN;S0> SELECT sum(id) FROM Tabelle1;|sum|-------|42 S1> BEGIN;S1> INSERT INTO Tabelle1 VALUES (12345);S1> COMMIT; S0> SELECT sum(id) FROM Tabelle1;|sum|-------|42 S0> COMMIT;

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