diff --git a/.gitignore b/.gitignore
index bf70826ea..00042c276 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,5 @@
 _build
 Pipfile.lock
+*.aux
+*.log
+diagrams/db.pdf
diff --git a/_static/db.png b/_static/db.png
new file mode 100644
index 000000000..bd463f2ef
Binary files /dev/null and b/_static/db.png differ
diff --git a/best_practices.rst b/best_practices.rst
index 5e1656a6c..cd80ac539 100644
--- a/best_practices.rst
+++ b/best_practices.rst
@@ -1,3 +1,10 @@
+
+Schema structure
+----------------
+
+.. image:: _static/db.png
+   :align: center
+
 .. _func_privs:
 
 Function privileges
diff --git a/diagrams/README.md b/diagrams/README.md
new file mode 100644
index 000000000..ee4e31da5
--- /dev/null
+++ b/diagrams/README.md
@@ -0,0 +1,30 @@
+## ERD
+
+The ER diagrams were created with https://github.com/BurntSushi/erd/.
+
+You can go download erd from https://github.com/BurntSushi/erd/releases and then do:
+
+```bash
+./erd_static-x86-64 -i diagrams/film.er -o _static/film.png
+```
+
+## LaTeX
+
+The schema structure diagram is done with LaTeX. You can use a GUI like https://www.mathcha.io/editor to create the .tex file.
+
+Then use this command to generate the png file.
+
+```bash
+pdflatex --shell-escape -halt-on-error -output-directory ../_static db.tex
+
+## and move it to the static folder(it's not easy to do it in one go with the pdflatex)
+mv db.png ../_static/
+```
+
+LaTeX is used because it's a tweakable plain text format.
+
+You can install the full latex suite with `nix`:
+
+```
+nix-env -iA texlive.combined.scheme-full
+```
diff --git a/diagrams/db.tex b/diagrams/db.tex
new file mode 100644
index 000000000..907b3c814
--- /dev/null
+++ b/diagrams/db.tex
@@ -0,0 +1,71 @@
+\documentclass[convert]{standalone}
+\usepackage{amsmath}
+\usepackage{tikz}
+\usepackage{mathdots}
+\usepackage{yhmath}
+\usepackage{cancel}
+\usepackage{color}
+\usepackage{siunitx}
+\usepackage{array}
+\usepackage{multirow}
+\usepackage{amssymb}
+\usepackage{gensymb}
+\usepackage{tabularx}
+\usepackage{booktabs}
+\usetikzlibrary{fadings}
+\usetikzlibrary{patterns}
+\usetikzlibrary{shadows.blur}
+\usetikzlibrary{shapes}
+
+\begin{document}
+
+\newcommand\customScale{0.4}
+
+\begin{tikzpicture}[x=0.75pt,y=0.75pt,yscale=-1,xscale=1, scale=\customScale, every node/.style={scale=\customScale}]
+
+%Shape: Can [id:dp7234864758664346]
+\draw  [fill={rgb, 255:red, 47; green, 97; blue, 144 }  ,fill opacity=1 ] (497.5,51.5) -- (497.5,255.5) .. controls (497.5,275.66) and (423.18,292) .. (331.5,292) .. controls (239.82,292) and (165.5,275.66) .. (165.5,255.5) -- (165.5,51.5) .. controls (165.5,31.34) and (239.82,15) .. (331.5,15) .. controls (423.18,15) and (497.5,31.34) .. (497.5,51.5) .. controls (497.5,71.66) and (423.18,88) .. (331.5,88) .. controls (239.82,88) and (165.5,71.66) .. (165.5,51.5) ;
+%Shape: Rectangle [id:dp7384065579958246]
+\draw  [fill={rgb, 255:red, 236; green, 227; blue, 227 }  ,fill opacity=1 ] (189,115) -- (252.5,115) -- (252.5,155) -- (189,155) -- cycle ;
+%Shape: Rectangle [id:dp24763906430298177]
+\draw  [fill={rgb, 255:red, 236; green, 227; blue, 227 }  ,fill opacity=1 ] (292,118) -- (362,118) -- (362,158) -- (292,158) -- cycle ;
+%Shape: Rectangle [id:dp3775601612537265]
+\draw  [fill={rgb, 255:red, 236; green, 227; blue, 227 }  ,fill opacity=1 ] (397,114) -- (467,114) -- (467,154) -- (397,154) -- cycle ;
+%Shape: Rectangle [id:dp7071457022893852]
+\draw  [fill={rgb, 255:red, 248; green, 231; blue, 28 }  ,fill opacity=1 ] (269,199) -- (397.5,199) -- (397.5,273) -- (269,273) -- cycle ;
+%Straight Lines [id:da8846759047437789]
+\draw    (268,234) -- (226.44,155.77) ;
+\draw [shift={(225.5,154)}, rotate = 422.02] [color={rgb, 255:red, 0; green, 0; blue, 0 }  ][line width=0.75]    (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29)   ;
+%Straight Lines [id:da6908444738113828]
+\draw    (309.5,198) -- (307.6,161) ;
+\draw [shift={(307.5,159)}, rotate = 447.06] [color={rgb, 255:red, 0; green, 0; blue, 0 }  ][line width=0.75]    (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29)   ;
+%Straight Lines [id:da7168757864413169]
+\draw    (398.5,233) -- (431.72,154.84) ;
+\draw [shift={(432.5,153)}, rotate = 473.03] [color={rgb, 255:red, 0; green, 0; blue, 0 }  ][line width=0.75]    (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29)   ;
+%Up Down Arrow [id:dp14059754167108496]
+\draw  [fill={rgb, 255:red, 126; green, 211; blue, 33 }  ,fill opacity=1 ] (312.5,288.5) -- (330,273) -- (347.5,288.5) -- (338.75,288.5) -- (338.75,319.5) -- (347.5,319.5) -- (330,335) -- (312.5,319.5) -- (321.25,319.5) -- (321.25,288.5) -- cycle ;
+
+% Text Node
+\draw (201,129) node [anchor=north west][inner sep=0.75pt]   [align=left] {tables};
+% Text Node
+\draw (307,130) node [anchor=north west][inner sep=0.75pt]   [align=left ] {tables};
+% Text Node
+\draw (414,127) node [anchor=north west][inner sep=0.75pt]   [align=left] {tables};
+% Text Node
+\draw (272,203) node [anchor=north west][inner sep=0.75pt]  [color={rgb, 255:red, 0; green, 0; blue, 0 }  ,opacity=1 ] [align=center] { \\ views \\ + \\ \ \ stored procedures};
+
+% Text Node
+\draw (322,178) node [anchor=north west][inner sep=0.75pt]  [color={rgb, 255:red, 255; green, 255; blue, 255 }  ,opacity=1 ] [align=left] {\large\textbf{api}};
+% Text Node
+\draw (202,97) node [anchor=north west][inner sep=0.75pt]  [color={rgb, 255:red, 255; green, 255; blue, 255 }  ,opacity=1 ] [align=left] {\large\textbf{auth}};
+% Text Node
+\draw (300,99) node [anchor=north west][inner sep=0.75pt]  [color={rgb, 255:red, 255; green, 255; blue, 255 }  ,opacity=1 ] [align=left] {\large\textbf{private}};
+% Text Node
+\draw (414,97) node [anchor=north west][inner sep=0.75pt]  [color={rgb, 255:red, 255; green, 255; blue, 255 }  ,opacity=1 ] [align=left] {\large\textbf{other}};
+% Text Node
+\draw (358,306) node [anchor=north west][inner sep=0.75pt]   [align=left] {REST};
+
+\end{tikzpicture}
+
+
+\end{document}
diff --git a/erd/film.er b/diagrams/film.er
similarity index 100%
rename from erd/film.er
rename to diagrams/film.er
diff --git a/erd/orders.er b/diagrams/orders.er
similarity index 100%
rename from erd/orders.er
rename to diagrams/orders.er
diff --git a/erd/README.md b/erd/README.md
deleted file mode 100644
index d71e8e263..000000000
--- a/erd/README.md
+++ /dev/null
@@ -1,7 +0,0 @@
-This files were created with https://github.com/BurntSushi/erd/.
-
-You can go download erd from https://github.com/BurntSushi/erd/releases and then do:
-
-```bash
-./erd_static-x86-64 -i erd/film.er -o _static/film.png
-```