A technique that can be used to compress data when a ____ compression is necessary is the Lempel-Ziv technique.?
A. ?random
B. ?run-length
C. ?lossy
D. ?lossless
Answer: D
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Pages in a database have P bytes. A table T has R rows and n integer attributes, A1, A2, .An. Each attribute is r bytes long. Assume that r is much greater than the size of a pointer, so the pointer size can be ignored when computing the size of an entry in an index. Assume that the domain of A1 is the integers between 1 and 100 and that the values of this attribute are randomly distributed in
the domain. Consider the following statement:
SELECT A2 FROM T WHERE A1 <= 50 AND A1 > 25Evaluate the cost, in terms of the number of I/O operations, of executing the statement under the following conditions. In order to get credit you must explain your work clearly. (a) The table is stored as a heap (no indexes). (b) There is a non-integrated (separate index file) clustered index with search key A1. (c) There is an unclustered index with search key (A2, A1).
Office ________ provides access to the file-level commands, such as saving a file, as well as program options and account settings
Fill in the blank(s) with correct word
The ____________________ feature in Visual Basic allows you to create interactive reports and forms for many types of data.
Fill in the blank(s) with the appropriate word(s).
With the chart selected, click the ____________________ button to format a chart with an attractive style.
Fill in the blank(s) with the appropriate word(s).