Physical Database Design Which of the following improves a query's processing time? 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. Query one query within another. 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 Which of the following is an advantage of partitioning? Extra space Security Complexity Inconsistent access speed Extra space Security Complexity Inconsistent access speed ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A rule of thumb for choosing indexes for a relational database includes which of the following? Be careful indexing attributes that have null values. Do not specify a unique index for the primary key of each table. Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries. Indexes are more useful on smaller tables. Be careful indexing attributes that have null values. Do not specify a unique index for the primary key of each table. Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries. Indexes are more useful on smaller tables. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design It is usually not very important to design the physical database to minimize the time required by users to interact with the information systems. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design The fastest read/write time and most efficient data storage of any disk array type is: RAID-1 RAID-2 RAID-3 RAID-0 RAID-1 RAID-2 RAID-3 RAID-0 ANSWER DOWNLOAD EXAMIANS APP
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