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University
| Teaching Since: | Apr 2017 |
| Last Sign in: | 438 Weeks Ago, 1 Day Ago |
| Questions Answered: | 9562 |
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bachelor in business administration
Polytechnic State University Sanluis
Jan-2006 - Nov-2010
CPA
Polytechnic State University
Jan-2012 - Nov-2016
Professor
Harvard Square Academy (HS2)
Mar-2012 - Present
1. What advantages does an indexed file have over a hash file? What advantages does a hash file have over an indexed file?
2. The chapter drew parallels between a traditional file index and the file directory system maintained by an operating system. In what ways does an operating system’s file directory differ from a traditional index?
3. If a hash file is partitioned into 10 buckets, what is the probability of at least two of three arbitrary records hashing to the same bucket? (Assume the hash function gives no bucket priority over the others.) How many records must be stored in the file until it is more likely for collisions to occur than not?
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