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?
| 12345678910111213141516 | S0> BEGIN;S0> SELECT * FROM Tabelle1;|id|-------|42 S1> BEGIN;S1> UPDATE Tabelle1 SET id = 12345;S1> COMMIT; S0> SELECT * FROM Tabelle1;|id|-------|12345 S0> COMMIT; |
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