Physical Database Design Sequential retrieval on a primary key for sequential file storage has which of the following features? Moderately fast Very fast Slow Impractical Moderately fast Very fast Slow Impractical 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. Combine a table with itself. Use compatible data types. Query one query within another. Write complex queries. Combine a table with itself. Use compatible data types. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Denormalization and clustering can work well to minimize data access time for small records. True False True False 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? LONG VARCHAR2 CHAR NUMBER LONG VARCHAR2 CHAR NUMBER 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. 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 two relations. All fields are stored in three relations. All fields are stored in four relations. All fields are stored in one relation. All fields are stored in two relations. All fields are stored in three relations. All fields are stored in four relations. All fields are stored in one relation. ANSWER DOWNLOAD EXAMIANS APP
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