Physical Database Design The fastest read/write time and most efficient data storage of any disk array type is: RAID-0 RAID-2 RAID-3 RAID-1 RAID-0 RAID-2 RAID-3 RAID-1 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 An extent is a contiguous section of disk storage space. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Sequential retrieval on a primary key for sequential file storage has which of the following features? Slow Very fast Moderately fast Impractical Slow Very fast Moderately fast Impractical ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following improves a query's processing time? Query one query within another. Use compatible data types. Combine a table with itself. Write complex queries. Query one query within another. Use compatible data types. Combine a table with itself. Write complex queries. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following are integrity controls that a DBMS may support? All of these 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. Limit the use of null values in some fields. All of these 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. Limit the use of null values in some fields. ANSWER DOWNLOAD EXAMIANS APP
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