Project Management Professional (PMP) tests knowledge of tasks required during system development.
Answer the following statement true (T) or false (F)
True
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The LSN stored in a page of the database refers to an update record in the log describing the most recent update to the page. Suppose that a transaction has performed the last update to a page and later aborts. Since its update to the page is reversed, the LSN in the page no longer refers to the appropriate update record. Why is this not a problem in the description of logging in the text?
What will be an ideal response?
Give an example in which a transaction in a distributed database system does not commit atomically (one database manager it accessed commits, and another aborts) and leaves the database in an inconsistent state.
What will be an ideal response?
Which of the following are binding properties?
a. Integer b. Double c. IntegerProperty d. DoubleProperty e. String
If this code fragment were executed in an otherwise correct and complete program, what would the output be? Explain.
``` int a = 3, b = 2, c = 5 if (a > b) a = 4; if ( b > c) a = 5; else a = 6; cout << a < endl; ``` a) 3 b) 4 c) 5 d) 6 e) None of the above, the cout statement belongs to the else and so is skipped.