Physical Database Design The fastest read/write time and most efficient data storage of any disk array type is: RAID-1 RAID-3 RAID-0 RAID-2 RAID-1 RAID-3 RAID-0 RAID-2 ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following is not a factor to consider when switching from small to large block size? The number of columns Block contention Random row access speed The length of all of the fields in a table row The number of columns Block contention Random row access speed The length of all of the fields in a table row ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The three newest database architectures in use today are relational, multidimensional and hierarchical. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design An extent is a contiguous section of disk storage space. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A rule of thumb for choosing indexes for a relational database includes which of the following? Indexes are more useful on smaller tables. Do not specify a unique index for the primary key of each table. Be careful indexing attributes that have null values. Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries. Indexes are more useful on smaller tables. Do not specify a unique index for the primary key of each table. Be careful indexing attributes that have null values. Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries. ANSWER DOWNLOAD EXAMIANS APP
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