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 VARCHAR2 CHAR NUMBER LONG VARCHAR2 CHAR NUMBER ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A secondary key is which of the following? Determines the tablespace required Primary key Nonunique key Useful for denormalization decisions Determines the tablespace required Primary key Nonunique key Useful for denormalization decisions 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 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 Denormalization and clustering can work well to minimize data access time for small records. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The primary goal of physical database design is data processing efficiency. False True False True ANSWER DOWNLOAD EXAMIANS APP
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