Describe the life-cycle of a database transaction, the types of locks that can effect the database performance. , and how a database administrator can mitigate performance issues from locking.

The three logical operators used to write compound conditions are "and," "or," and "not." a: true b: false

Q14 what is most important for you to choose before you build a network? a. private network b. nos c. network media d. network protocol e. directory service

Which of the following is not a way in which trees benefit the environment? a. they remove a significant amount of carbon dioxide from the atmosphere. b. they remove a significant amount of oxygen from the atmosphere. c. their roots hold soil in place, reducing rates of erosion. d. they remove ozone and particulates from the atmosphere. select the best answer from the choices provided a b c d