Physical Database Design A bitmap index is an index on columns from two or more tables that come from the same domain of values. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following improves a query's processing time? 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. Query one query within another. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following is an advantage of partitioning? Security Complexity Inconsistent access speed Extra space Security Complexity Inconsistent access speed Extra space ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design What is the best data type definition for Oracle when a field is alphanumeric and has a fixed length? VARCHAR2 CHAR LONG NUMBER VARCHAR2 CHAR LONG NUMBER ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A pointer is a detailed coding scheme recognized by system software for representing organizational data. True False True False 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. Indexes are more useful on smaller tables. 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. Be careful indexing attributes that have null values. Indexes are more useful on smaller tables. 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. ANSWER DOWNLOAD EXAMIANS APP
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