Designers use which of the following to tune the performance of systems to support timecritical operations?

Related Questions

• Designers use which of the following to tune the performance of systems to support time-critical operations?
•                              which increases the number of I/O operations needed to write a single logical block, pays a significant time penalty in terms of write performance.
•                      is increasingly being used in server systems to improve performance by caching frequently used data, since it provides faster access than disk, with larger storage capacity than main memory.
• Which of the following data types does the SQL standard not support?
• Which of the following SQL standard support triggers?
• Which of the following is used for undo operations alone?
• Which of the following constitutes a basic set of operations for manipulating relational data?
• Which of the following operations need the participating relations to be union compatible?
• Which is proper subset designed to support ‘views’ belonging to different classes of users in order to hid or protect information:
• Which of the join operations do not preserve non matched tuples?