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 A bitmap index is an index on columns from two or more tables that come from the same domain of values. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Hashing algorithm converts a primary key value into a record address. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary? CHAR VARCHAR2 NUMBER LONG CHAR VARCHAR2 NUMBER LONG ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The blocking factor is: attributes grouped together by the same secondary key. attributes grouped together by the same primary key. a group of fields stored in adjacent memory. the number of physical records per page. attributes grouped together by the same secondary key. attributes grouped together by the same primary key. a group of fields stored in adjacent memory. the number of physical records per page. 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
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