4.18.3 Can you answer these questions?

4.18.3.1 Drawing a (4x4)-grid in TikZ using `\foreach` - riding the wave of `\foreach` fun

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432549

How do I draw a 4x4 grid over the following TikZ diagram using \foreach? Is it preferable to do so with one \foreach command? 
\documentclass{amsart} 
\usepackage{mathtools} 
\usepackage{tikz} 
... 
[tikz-pgf] [foreach]
 

asked by Adelyn https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=63219 1 vote

4.18.3.2 Document Database Scheme

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432355

I wonder if there is any good method to document the relations between tables from a MySQL (or any other database) in LaTeX? 
I found this thread Which database documentation software do you use for  ... 
[database] [mysql]
                                                                                  

                                                                                  
 

asked by user2567875 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=34927 1 vote

4.18.3.3 How do I set the exact same margins to all sides of the page?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432547

I know that there are a lot of similar questions, but sadly, none of which solved my problem. 
I want an A4 page with the textbox exactly 10mm margins to all sides (to the edges of the paper). But  ... 
[margins]
 

asked by Guest https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=163455 1 vote

answered by Myles https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=128068 0 votes