Maurice Tutor

(5)

$15/per page/Negotiable

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Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 2 Days Ago
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 12 Nov 2017 My Price 6.00

bulk-loading algorithm,

Assume that you have just built a dense B+ tree index using Alternative (2) on a heap file containing 20,000 records. The key field for this B+ tree index is a 40-byte string, and it is a candidate key. Pointers (i.e., record ids and page ids) are (at most) 10-byte values. The size of one disk page is 1,000 bytes. The index was built in a bottom-up fashion using the bulk-loading algorithm, and the nodes at each level were filled up as much as possible

1. How many levels does the resulting tree have?

2. For each level of the tree, how many nodes are at that level?

3. How many levels would the resulting tree have if key compression is used and it reduces the average size of each key in an entry to 10 bytes?

4. How many levels would the resulting tree have without key compression, but with all pages 70 percent full?

Answers

Maurice Tutor
(5)
Status NEW Posted 12 Nov 2017 07:11 PM My Price 6.00

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