Physical Database Design Sequential retrieval on a primary key for sequential file storage has which of the following features? Moderately fast Impractical Very fast Slow Moderately fast Impractical Very fast Slow ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design When storage space is scarce and physical records cannot span pages, creating multiple physical records from one logical relation will minimize wasted storage space. False True False True 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 LONG VARCHAR2 NUMBER CHAR LONG VARCHAR2 NUMBER ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Some advantages of partitioning include: efficiency, security, and load balancing. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A secondary key is which of the following? Nonunique key Primary key Determines the tablespace required Useful for denormalization decisions Nonunique key Primary key Determines the tablespace required Useful for denormalization decisions ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following is an advantage of partitioning? Complexity Security Extra space Inconsistent access speed Complexity Security Extra space Inconsistent access speed ANSWER DOWNLOAD EXAMIANS APP
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