Physical Database Design The fastest read/write time and most efficient data storage of any disk array type is: RAID-1 RAID-0 RAID-3 RAID-2 RAID-1 RAID-0 RAID-3 RAID-2 ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following improves a query's processing time? Query one query within another. Write complex queries. Use compatible data types. Combine a table with itself. Query one query within another. Write complex queries. Use compatible data types. Combine a table with itself. 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? VARCHAR2 NUMBER CHAR LONG VARCHAR2 NUMBER CHAR LONG 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 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 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. All fields are stored in one relation. All fields are stored in four relations. 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 Impractical Moderately fast Slow Very fast Impractical Moderately fast ANSWER DOWNLOAD EXAMIANS APP
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