Physical Database Design Sequential retrieval on a primary key for sequential file storage has which of the following features? Moderately fast Very fast Impractical Slow Moderately fast Very fast Impractical Slow ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true? All fields are stored in one relation. All fields are stored in four relations. All fields are stored in three relations. All fields are stored in two relations. All fields are stored in one relation. All fields are stored in four relations. All fields are stored in three relations. All fields are stored in two relations. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design In general, larger block sizes are used for online transaction processing applications and smaller block sizes are used for databases with a decision support or data warehousing system. 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? LONG VARCHAR2 NUMBER CHAR LONG VARCHAR2 NUMBER CHAR ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The primary goal of physical database design is data processing efficiency. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A secondary key is which of the following? Useful for denormalization decisions Primary key Nonunique key Determines the tablespace required Useful for denormalization decisions Primary key Nonunique key Determines the tablespace required ANSWER DOWNLOAD EXAMIANS APP
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