____________________ is the process of creating an improved model for an existing system.
Fill in the blank(s) with the appropriate word(s).
Reverse engineering
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Using the ____ option of the validator page will display extended comments for errors.
A. Show Outline B. Result C. Root Element D. Verbose Output
Many word processing programs can read the ____ format.
A. .docx B. .wrd C. .tmp D. .rtf
Estimate the number of page transfers needed to compute r s using a sort-merge join, assuming the following: A=B
1. The size of r is 1000 pages, 10 tuples per page; the size of s is 500 pages, 20 tuples per page. 2. The size of the main memory bu?er for this join computation is 10 pages. 3. The Cartesian product of matching tuples in r and s (see Figure 10.7) is computed using a block-nested loops join. 4. r.A has 100 distinct values and s.B has 50 distinct values. These values are spread around the ?les more or less evenly, so the size of ?A=c(r), where c r.A, does not vary much with c.
All of the following statements are TRUE regarding macros EXCEPT:
A) Recording macros is generally considered an activity for worksheet developers. B) As with cell references in formulas, cell references in macros can be absolute or relative. C) The effects of a macro can be reversed using the Undo feature. D) Macros are recorded with absolute references by default.