Options: Subset of a Cartesian product of a list of attributes
B. Subset of a Cartesian product of a list of domains
C. Subset of a Cartesian product of a list of tuple
D. Subset of a Cartesian product of a list of relations
The complexity of the average case of an algorithm is
Options: a. Much more complicated to analyze than that of worst case
b. Much more simpler to analyze than that of worst case
c. Sometimes more complicated and some other times simpler than that of worst case
d. None or above
Options: Data in which changes to existing records cause the previous version of the records to be eliminated, Data in which changes to existing records do not cause the previous version of the records to be eliminated, Data that are never altered or deleted once they have been added, Data that are never deleted once they have been added
Options: A) A compiler does a conversion line by line as the program is run
B) A compiler converts the whole of a higher level program code into machine code in one step
C) A compiler is a general purpose language providing very efficient execution
D) None of the above
A subtype discriminator is which of the following?
Options: An attribute of the supertype whose values determine the subtype, An attribute of the subtype whose values determine the supertype, An attribute of the supertype whose values determine the supertype, An attribute of the subtype whose values determine the subtype
The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband.
Options: Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel, Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable, Baseband refers to local area networks, and broadband refers to wide area networks., Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed
Which of the following statements is true about symmetric multiprocessing?
Options: A single copy of the operating system resides in each processor., Useful for situations where data must remain in memory to process., Bottlenecks increase with uniprocessor systems because tasks are not shared., The problems of memory contention are unlikely.
Options: to create a table, defining its columns, integrity constrains, and storage allocation, to add a column/integrity constraint to a table, to redefine a column, to change a table's storage characteristics