Database Concepts (8th Edition)
Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Chapter 6, Problem 6.45RQ
Program Plan Intro

Database Recovery:

Database recovery is the process of retrieving the data which was lost during the updating or deletion.

  • It prepares the copy of the database and holds the data stored in the table (i.e save database).
  • It also keeps a log of the transaction changes against the database since the save.
  • If some failure occurs, the lost data can be retrieved using one of the two methods
    • rollback
    • rollforward

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Dijkstra's Algorithm (part 1).  Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values.  Write down your final [correct] answer, as you‘ll need it for the next question.
4. |z + 5 - 5i| = 7
14. dz, C: |z❘ C: |z❘ = 0.6 ze² - 2iz H
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