Physical Database Design A secondary key is which of the following? Determines the tablespace required Useful for denormalization decisions Primary key Nonunique key Determines the tablespace required Useful for denormalization decisions Primary key Nonunique key 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 Some advantages of partitioning include: efficiency, security, and load balancing. 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 fixed length? LONG CHAR VARCHAR2 NUMBER LONG CHAR VARCHAR2 NUMBER ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following improves a query's processing time? Write complex queries. Combine a table with itself. Query one query within another. Use compatible data types. Write complex queries. Combine a table with itself. Query one query within another. Use compatible data types. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Two basic constructs to link one piece of data with another piece of data: sequential storage and pointers. True False True False ANSWER DOWNLOAD EXAMIANS APP
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