It could be ‘save as’ or ‘your work’, not completely sure
Answer:
It gives credit to the original author and shows that you are not taking credit for someone
else's work
Answer:
cryptography
Explanation:
cryptography
In computer science, cryptography refers to secure information and communication techniques derived from mathematical concepts and a set of rule-based calculations called algorithms, to transform messages in ways that are hard to decipher
The union of two tables is basically the total of the two tables, so "or" questions would be my guess.