Physical Database Design Sequential retrieval on a primary key for sequential file storage has which of the following features? Slow Very fast Moderately fast Impractical Slow Very fast Moderately fast Impractical ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Denormalization and clustering can work well to minimize data access time for small records. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The fastest read/write time and most efficient data storage of any disk array type is: RAID-3 RAID-0 RAID-2 RAID-1 RAID-3 RAID-0 RAID-2 RAID-1 ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A secondary key is which of the following? Primary key Useful for denormalization decisions Determines the tablespace required Nonunique key Primary key Useful for denormalization decisions Determines the tablespace required Nonunique key ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design What is the best data type definition for Oracle when a field is alphanumeric and has a fixed length? LONG VARCHAR2 CHAR NUMBER LONG VARCHAR2 CHAR NUMBER 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
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