In 1976, a bank was not using a dbms, but merely using files to store its data, accounts, and transactions. whenever their system crashed due to a software bug, hardware problem, or power outage, there were customers complaining their data being corrupted, as they were in the middle of transferring money from one account to another, etc. the adoption of relational databases back then solved this problem. what was the main feature of a relational dbms that attributed to solving this problem?
a.
indexing support
b.
transaction support
c.
sql access, in particular, update, insert, and delete statements
d.
data privacy support

Carlos, an algebra teacher, is creating a series of powerpoint presentations to use during class lectures. after writing, formatting, and stylizing the first presentation, he would like to begin writing the next presentation. he plans to insert all-new content, but he wants to have the same formatting and style as in the first one. what would be the most efficient way for carlos to begin creating the new presentation? going under the file tab and opening the first presentation, deleting all content from each page, and adding new content going under the file tab and clicking on new in the left pane, then choosing new from existing going under the design tab and clicking on themes, then selecting the theme that was used for the first template going under the design tab and opening the template that was created for the first presentation