EBK DATABASE SYSTEM CONCEPTS
EBK DATABASE SYSTEM CONCEPTS
7th Edition
ISBN: 9781260049268
Author: SILBERSCHATZ
Publisher: MCG COURSE
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Chapter 10, Problem 12E

Explanation of Solution

Opinions for handling the transaction load:

  • Query performance must be improved in a centralized system for handling the transaction load.
  • While performing Query processing, the following points must be noted,
    1. ○ Reduce the amount of memory and storage needed for query processing.
    2. ○ Maximize the throughput which means that the number of requests that are processed in a given amount of time should be increased.
    3. ○ Query Response Time has to be reduced.
    4. ○ Memory and Storage needed for processing has to be reduced.
    5. ○ Avoid Cross Product Operations as they result in huge intermediate tables that will require time for processing.
    6. ○ Perform restrictive select operations before the other operations.
  • Query Optimization is performed by following the below given steps:
    1. ○ Generating Query Tree
      • The root of this tree represents the whole query and leaf nodes are the tables of the query...

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8.4 Self-Bias Configuration 20. Determine Zi. Zo. and A,, for the network of Fig. 8.73 if gf, = 3000 μS and gos = 50 μs. 21. Determine Z, Zo, and A, for the network of Fig. 8.73 if the 20-uF capacitor is removed and the parameters of the network are the same as in Problem 20. Compare results with those of Problem 20. +12 V 3.3 ΚΩ HE C₂ Vo Z Zo C₁ 10 ΜΩ Z₁ 1.1 ΚΩ Cs 20 µF FIG. 8.73 Problems 20, 21, 22, and 59.
21. Determine Zi, Zo, and A, for the network of Fig. 8.73 if the 20-μF capacitor is removed and the parameters of the network are the same as in Problem 20. Compare results with those of Problem 20. +12 V 3.3 ΚΩ +6 C₂ C₁ Z₁ 10 ΜΩ 1.1 ΚΩ Cs 20 μF FIG. 8.73 Zo
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