1. From the data base of the website, we can make problems.

Question

2. From the data bank of the website, we can make problems.

(Which expression is right?)

3. Tim_Data
(What is the English name for the short holizontal line? It is not called 'hyphen', right?)

Answer 1

1. I'd use "database" (one word).

And I think #1 is the more common expression.

In 3, that line is called an underscore.