Physical Database Design Which of the following improves a query's processing time? Combine a table with itself. Use compatible data types. Write complex queries. Query one query within another. Combine a table with itself. Use compatible data types. Write complex queries. Query one query within another. 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. True False True False ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following are integrity controls that a DBMS may support? All of these Limit the use of null values in some fields. Limit the set of permissible values that a field may assume. Assume a default value in a field unless a user enters a value for that field. All of these Limit the use of null values in some fields. Limit the set of permissible values that a field may assume. Assume a default value in a field unless a user enters a value for that field. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The fastest read/write time and most efficient data storage of any disk array type is: RAID-2 RAID-3 RAID-1 RAID-0 RAID-2 RAID-3 RAID-1 RAID-0 ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process. True False True False 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. True False True False ANSWER DOWNLOAD EXAMIANS APP
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