9781111969752_TB_ch08 - Chapter 8 Advanced Data Handling...

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Chapter 8: Advanced Data Handling Concepts TRUE/FALSE 1. The sorting process is usually reserved for a relatively large number of data items. ANS: F PTS: 1 REF: 306 2. The most popular computer coding schemes include ASCII, Numeric, and EBCDIC. ANS: F PTS: 1 REF: 307 3. You can make additional improvements to a bubble sort to reduce unnecessary comparisons. ANS: T PTS: 1 REF: 322 4. An insertion sort is another name for a bubble sort. ANS: F PTS: 1 REF: 329 5. Two-dimensional arrays are never actually required in order to achieve a useful program. ANS: T PTS: 1 REF: 338 6. Some programming languages allow multidimensional arrays. ANS: T PTS: 1 REF: 339 7. It is relatively easy for people to keep track of arrays with more than three dimensions. ANS: F PTS: 1 REF: 339 8. You do not need to determine a record’s exact physical address in order to use it. ANS: T PTS: 1 REF: 341 9. When a record is removed from an indexed file, it has to be physically removed. ANS: F PTS: 1 REF: 342 10. Every time you add a new record to a linked list, you search through the list for the correct logical location of the new record. ANS: T PTS: 1 REF: 343 MULTIPLE CHOICE 1. When records are in ____ order, they are arranged one after another on the basis of the value in a particular field. a. random c. binary b. sequential d. incremental
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ANS: B PTS: 1 REF: 306 2. The ____ is often used as a statistic in many cases because it represents a more typical case. 3. The ____ is skewed by a few very high or low values. 4. When you store data records, they exist in ____. 5. When you create a ____ report, the records must have been sorted in order by a key field. a. summary c. detail b. control break d. totals ANS: B PTS: 1 REF: 306 6. When computers sort data, they always use ____ values when making comparisons between values. 7. Because “A” is always less than “B”, alphabetic sorts are ____ sorts. 8. In a ____, items in a list are compared with each other in pairs.
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