Physical Database Design A secondary key is which of the following? Nonunique key Useful for denormalization decisions Determines the tablespace required Primary key Nonunique key Useful for denormalization decisions Determines the tablespace required Primary key ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Selecting a data type involves which of the following? Improve data integrity Represent most values All of these Maximize storage space Improve data integrity Represent most values All of these Maximize storage space 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? Random row access speed Block contention The number of columns The length of all of the fields in a table row Random row access speed Block contention The number of columns The length of all of the fields in a table row ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Some advantages of partitioning include: efficiency, security, and load balancing. 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? LONG NUMBER CHAR VARCHAR2 LONG NUMBER CHAR VARCHAR2 ANSWER DOWNLOAD EXAMIANS APP
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