Explain the purpose of transaction logs and checkpoints
What will be an ideal response?
Transaction logs are created to facilitate the recovery of the database. All transactions that make changes to the database are recorded in the transaction log before they are applied to the database. In the event that the database fails the transactions in the log can be used to undo changes made by transactions that were not committed, and to redo changes that were committed since the database was last saved. Checkpoints are used in conjunction with transaction logs. A checkpoint is a marker for when the last time the database and the transaction log were synchronized. If the database must be restored, only after images for transactions that began after the last checkpoint have to be applied.
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A year after she assisted Thomas Engineering in making changes to an employee incentive plan, Kara, an OD consultant, is visiting the company to determine if the changes were helpful. Kara will compare sales and turnover data from the last three years to the current year. Kara is in the ______ stage of the OD process.
A. refreezing B. intervention C. diagnosis D. evaluation E. adaptation
Programs in their compiled state are very susceptible to the threat of unauthorized modification
Indicate whether the statement is true or false
Which statement is not true about partial regression coefficients?
A) The combined effects of X1 and X2 on Y are additive. In other words, if X1 and X2 are each changed by one unit, the expected change in Y would be (b1 + b2). B) The beta coefficients are the partial regression coefficients obtained when all the variables (Y, X1, X2...Xk) have been standardized to a mean of 0 and a variance of 1 before estimating the regression equation. C) Partial regression coefficients have an order associated with them. D) Both A and B are not true.
Someone whose word is untrue and unreliable risks _____________________, either personal or legal
a. disclosure and sanctions b. an audit c. a bad reputation at work d. missing opportunities