Physical Database Design What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary? CHAR NUMBER LONG VARCHAR2 CHAR NUMBER LONG VARCHAR2 ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following is an advantage of partitioning? Inconsistent access speed Complexity Security Extra space Inconsistent access speed Complexity Security Extra space ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A secondary key is which of the following? Useful for denormalization decisions Primary key Nonunique key Determines the tablespace required Useful for denormalization decisions Primary key Nonunique key Determines the tablespace required ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following improves a query's processing time? Write complex queries. Combine a table with itself. Query one query within another. Use compatible data types. Write complex queries. Combine a table with itself. Query one query within another. Use compatible data types. 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? CHAR LONG NUMBER VARCHAR2 CHAR LONG NUMBER VARCHAR2 ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Selecting a data type involves which of the following? Maximize storage space Improve data integrity All of these Represent most values Maximize storage space Improve data integrity All of these Represent most values ANSWER DOWNLOAD EXAMIANS APP
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