The primary goal of physical database design is data processing efficiency. True False TRUE ANSWER : ? YOUR ANSWER : ?
The fastest read/write time and most efficient data storage of any disk array type is: RAID-2 RAID-1 RAID-0 RAID-3 TRUE ANSWER : ? YOUR ANSWER : ?
In general, larger block sizes are used for online transaction processing applications and smaller block sizes are used for databases with a decision support or data warehousing system. True False TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following are integrity controls that a DBMS may support? Assume a default value in a field unless a user enters a value for that field. All of these Limit the use of null values in some fields. Limit the set of permissible values that a field may assume. TRUE ANSWER : ? YOUR ANSWER : ?
Distributing the columns of a table into several separate physical records is known as horizontal partitioning. False True TRUE ANSWER : ? YOUR ANSWER : ?
A pointer is a detailed coding scheme recognized by system software for representing organizational data. True False TRUE ANSWER : ? YOUR ANSWER : ?
Some advantages of partitioning include: efficiency, security, and load balancing. False True TRUE ANSWER : ? YOUR ANSWER : ?
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 TRUE ANSWER : ? YOUR ANSWER : ?
What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary? VARCHAR2 LONG CHAR NUMBER TRUE ANSWER : ? YOUR ANSWER : ?