Give serially equivalent interleaving of T and U with the following properties:
(i) that is strict;
(ii) that is not strict but could not produce cascading aborts;
(iii) that could produce cascading aborts.
For strict executions, the reads and writes of a transaction are delayed until all transactions that have previously written the same objects are either committed or aborted. We therefore indicate the commit of the earlier transaction:
ii) For serially equivalent executions that are not strict but cannot produce cascading aborts, there must be no dirty reads, which requires that the reads of a transaction are delayed until all transactions that have previously written the same objects are either committed or aborted (we can allow writes to overlap).
iii) For serially equivalent executions that can produce cascading aborts, that is, dirty reads are allowed. Taking A and adding a commit immediately after the last operation of U, we get:
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Which of the following is NOT true when defining multiple properties on the same field?
A) The Format property affects how the data is both displayed and stored. B) If you save an input mask, the input mask is ignored when you define a format in the field's Format property. C) The data in the table does not change, regardless of how you define the Format property. D) When defining an input mask that differs from the Format property, the Format property takes precedence when the data is displayed.
A label on a form is an example of a(n) ________ control
A) bound B) range C) unbound D) trigger