To avoid a mistake when using an update query that includes making calculations on a field, what is one thing you can do to prevent losing the original information?
A) Add an additional field with the original figures.
B) When you run the query, just undo if you question the new figures.
C) Rerun the query to make sure the figures have updated.
D) Backup the database after you have run the query.
A
Computer Science & Information Technology
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Which web attack is a server-side attack?
A. Clickjacking B. Cross-site scripting C. SQL injection D. Cross-site request forgery
Computer Science & Information Technology
On a certain computer we estimate that, regardless of the OS it runs, thread scheduling costs about 50 ?s, a null procedure call 1 ?s, a context switch to the kernel 20 ?s and a domain transition 40 ?s. For each of Mach and SPIN, estimate the cost to a client of calling a dynamically loaded null procedure.
What will be an ideal response?
Computer Science & Information Technology