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000-910 IBM Managing and Optimizing Informix Dynamic Server Databases
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Exam Name: Exam Type: Doc Type:
Managing and Optimizing Informix Dynamic Server Databases IBM Exam Code: Q & A with Explanations Total Questions:
Question: 1 Where are table spaces (tblspaces) created? A. in dbspaces B. in pages C. in extents D. in chunks Answer: A Question: 2 What is database administration NOT concerned with? A. indexing B. creating tables C. accessing data D. application building Answer: D Question: 3 Disk space for a table is allocated in one or more units called what? A. tblspaces B. extents C. blobs D. chunks Answer: B Question: 4 What is a chunk when using raw devices? A. a contiguous unit of disk space B. a dynamic unit of disk space C. a location in shared memory D. a data table Answer: A Question: 5 Which statement correctly changes the next extent size? A. ALTER TABLE customer MODIFY NEXT SIZE 300 B. ALTER TABLE customer MODIFY NEXT EXTENT SIZE 300 C. ALTER TABLE customer MODIFY EXTENT SIZE 300 D. ALTER TABLE customer NEXT SIZE 300 Answer: A Question: 6 What is the system catalog? A. A catalogued set of index criteria B. A set of tables created by the administrator. Page 1 of 27
000-910 140
Exam Name: Exam Type: Doc Type:
Managing and Optimizing Informix Dynamic Server Databases IBM Exam Code: Q & A with Explanations Total Questions:
C. A set of tables that managed the operating system D. A set of tables that describe the structure of the database Answer: A Question: 7 With database logging, where are transaction records first placed? A. in a temporary database table B. in the logical log buffer C. in the primary chunk D. in the physical buffer Answer: B Question: 8 Where is fragment information stored? A. in the system catalog tables B. in the physical logs C. in the reserved pages D. in the first page of the database tblspace Answer: A Question: 9 Which two types of fragmentation are allowed in a CREATE TABLE statement? A. disk striping B. dbspace C. indexing D. round robin E. mirroring F. tblspace G. sorting H. expression Answer: D, H Question: 10 Why is a hash function advantageous in an expression-based distribution? A. Because it creates an even distribution of data. B. Because it creates an unevn distribution of data. C. Because it does not do expression testing D. Because it places all data in one dbspace. Answer: A, B Question: 11 Which two happen when the ALTER FRAGMENT statement is run? A. Transaction logging, if present is suspended. B. The table is locked until the statement is completed. C. The database is locked until the statement is complete. Page 2 of 27
000-910 140
Exam Name: Exam Type: Doc Type:
Managing and Optimizing Informix Dynamic Server Databases IBM Exam Code: Q & A with Explanations Total Questions:
000-910 140
D. For databases with logging the statement executes as a single transaction Answer: B, D Question: 12 Which fragments an index by expression? A. FRAGMENT BY EXPRESSION col_1 B. FRAGMENT BY EXPRESSION col_2>=10000IN dbspace 1 AND col_2>10000IN dbspace2 C. FRAGMMENT BY EXPRESSION col_1<10000 AND col_2 IN dbspace 2 D. FRAGMENT BY EXPRESSION col <20000 IN dbspace 1, col> = 20000 IN dbspace 2 Answer: D Question: 13 What are four valid logical and relational operators that can be used with expression-based distribution? A. AND B. IN C. < D. >= E. I= F. MATCHES Answer: A, B, C, D Question: 14 In which two situations would you use a round robin fragmentation strategy? A. When all fragments must be second B. To create uneven data distributions C. When queries perform sequential scans and you have little information about the data being stored. D. When tables are accessed with a high degree of selectivity Answer: A, C Question: 15 What are three advantages of fragmentation? A. higher availability B. reduced disk space requirements C. parallel scans are possible with PDQ D. finer granularity of archives and resources Answer: A, C, D Question: 16 What does the ATTACH clause in the ALTER FRAGMENT statement do? A. It adds extents to a table. B. It attaches a raw data file to a table C. It combines two unregimented tables D. It combines two fragmented tables Page 3 of 27
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