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Vendor: IBM
Exam Code: C2090-614
Exam Name: DB2 10.1 Advanced DBA for Linux UNIX and Windows
Certification: IBM Certified Advanced Database Administrator
Total Questions: 108 Q&A
Updated on: Jan 17, 2025
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Which constraints are used to tell the DB2 Optimizer to consider business rules that are not enforced by the database manager?
A. Check constraints
B. Default constraints
C. Informational constraints
D. Referential integrity constraints
What advantage do block-based buffer pools offer compared to regular buffer pools?
A. They improve the performance of sequential prefetching by reading contiguous pages from disk and writing them into contiguous pages in a buffer pool.
B. They improve the performance of random I/O by reading non-contiguous pages from disk and writing them into near-contiguous free space in a buffer pool.
C. They improve the performance of vectored reads by retrieving non-contiguous pages from disk, combining them into extent-sized blocks, and writing the blocks into contiguous pages in a buffer pool.
D. They improve the performance of scattered writes by retrieving non-contiguous pages from a buffer pool, combining them into extent-sized blocks, and writing the blocks into contiguous pages on disk.
What statement regarding Asynchronous index cleanup (AIC) is correct?
A. AIC removes all invalid index entries that refer to the attached partitions.
B. AIC is initiated if a range-partitioned table contains one or more nonpartitioned indexes.
C. AIC activates a newly attached partition after the index entries have been synchronized.
D. AIC will not be initiated if a range-partitioned table has dependent materialized query tables (MQTs).
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