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Disk, Memory, and Process Management
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Table Fragmentation and PDQ
In This Chapter
Fragmentation
Fragmentation Goals
Responsibility for Fragmentation
Fragmentation Strategies
Table Fragmentation
Temporary Table Fragmentation
Table Index Fragmentation
SQL Statements That Perform Fragmentation Tasks
Parallel Database Query
Parallelism
Structure of a PDQ Query
SQL Operators
Exchanges
PDQ Threads
Use of PDQ
OLTP Applications
Decision-Support Applications
Database Server Use of PDQ
Resource Grant Manager
Fragmentation Enhancement to PDQ
How the Database Server Balances Workload
Resource Allocation with PDQ
Parameters for Controlling PDQ
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