Physical Database Design Sequential retrieval on a primary key for sequential file storage has which of the following features? Very fast Moderately fast Slow Impractical Very fast Moderately fast Slow Impractical 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 secondary key is which of the following? Primary key Nonunique key Determines the tablespace required Useful for denormalization decisions Primary key Nonunique key Determines the tablespace required Useful for denormalization decisions ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Hashing algorithm converts a primary key value into a record address. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The blocking factor is: attributes grouped together by the same secondary key. the number of physical records per page. attributes grouped together by the same primary key. a group of fields stored in adjacent memory. attributes grouped together by the same secondary key. the number of physical records per page. attributes grouped together by the same primary key. a group of fields stored in adjacent memory. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A multidimensional database model is used most often in which of the following models? Network Data warehouse Relational Hierarchical Network Data warehouse Relational Hierarchical ANSWER DOWNLOAD EXAMIANS APP
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