You can slow step a macro, which means to run it one action at a time to observe the effect of each specific action.
Answer the following statement true (T) or false (F)
False
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A blind write occurs when a transaction writes a database item it has not read. For example, in the Student Registration System a transaction might compute a student’s GPA by reading her course grades, computing the average, and then (blindly) writing the result in the appropriate database item without first reading that item. Some applications have the property that no transactions perform blind writes. Show that for such applications
a. Viewequivalence is equivalent to conflict equivalence. b. The timestamp-ordered concurrency control described in Section 20.9.1 never uses the Thomas Write Rule. c. In the timestamp-ordered concurrency control described in the text, for each item, x, that a transaction, T, w rites, w hen T commits, rt(x) = wt(x) = TS(T).
An executable entity within a process is a __________ object.
Fill in the blank(s) with the appropriate word(s).
The original HTML specifications have been revised several times by the ____.
A. W3C B. B2C C. SSL D. P2P
Designing a preliminary layout sketch is referred to as creating a ____.
a. storyboard b. rough c. neither a. nor b. d. both a. and b.