Question: The lost - update problem occurs when A . the DBMS performs an update, but the application is not informed about the change B .

The lost-update problem occurs when
A. the DBMS performs an update, but the application is not informed about the change
B. two users in a multi-user environment attempt to make the same updates to the database at the same time, so that one erases the effect of the other
C. an update request to the DBMS gets lost in network traffic and never gets accomplished
D. the database management system fails to perform a requested update, and the user is not informed of the situation
E. a program aborts after performing an update on the database
The lost - update problem occurs when A . the

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