diff --git a/doc_db/LayoutwithTools.svg b/doc_db/LayoutwithTools.svg
deleted file mode 100644
index a89295c..0000000
--- a/doc_db/LayoutwithTools.svg
+++ /dev/null
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-  <text x='20' y='25' class='legendTitle' >Plugin materiels database</text> 
-  <a xlink:href='https://dbschema.com'><text x='20' y='39' class='legendSubTitle'><tspan>(c) DbSchema</tspan></text></a> 
-  <text x='20' y='53' class='legendSubTitle'><tspan>Hover columns to read the comments.</tspan></text> 
-</g>
-
-<g transform='translate(0,110)'>
-<!-- == Fk 'plugin_materiels_entry_Fk_plugin_materiels_entry' == -->
-<path id='plugin_materiels_entry_Fk_plugin_materiels_entry'  onmouseover="hghl(['plugin_materiels_entry_Fk_plugin_materiels_entry','Default.plugin_materiels_entry.equipment_id','Default.plugin_materiels_equipment.id'])" onmouseout="uhghl(['plugin_materiels_entry_Fk_plugin_materiels_entry','Default.plugin_materiels_entry.equipment_id','Default.plugin_materiels_equipment.id'])" transform='translate(8,0)' class='scene' d='M 960,128L 760,128Q 752,128 752,136L 752,280Q 752,288 744,288L 736,288' >
-	<title>Fk Fk_plugin_materiels_entry
-plugin_materiels_entry ref plugin_materiels_equipment ( equipment_id -&gt; id )</title>
-</path>
-<path transform='translate(8,0)' marker-start='url(#foot1)' marker-end='url(#arrow1)'    d='M 960,128L 760,128Q 752,128 752,136L 752,280Q 752,288 744,288L 736,288' ><title>Fk Fk_plugin_materiels_entry
-plugin_materiels_entry ref plugin_materiels_equipment ( equipment_id -&gt; id )</title></path>
-<text x='786' y='123' transform='rotate(0 786,123)' class='relName'>Fk_plugin_materiels_entry</text>
-<!-- == Fk 'plugin_materiels_output_Fk_plugin_materiels_output' == -->
-<path id='plugin_materiels_output_Fk_plugin_materiels_output'  onmouseover="hghl(['plugin_materiels_output_Fk_plugin_materiels_output','Default.plugin_materiels_output.equipment_id','Default.plugin_materiels_equipment.id'])" onmouseout="uhghl(['plugin_materiels_output_Fk_plugin_materiels_output','Default.plugin_materiels_output.equipment_id','Default.plugin_materiels_equipment.id'])" transform='translate(8,0)' class='scene' d='M 960,288L 736,288' >
-	<title>Fk Fk_plugin_materiels_output
-plugin_materiels_output ref plugin_materiels_equipment ( equipment_id -&gt; id )</title>
-</path>
-<path transform='translate(8,0)' marker-start='url(#foot1)'     d='M 960,288L 736,288' ><title>Fk Fk_plugin_materiels_output
-plugin_materiels_output ref plugin_materiels_equipment ( equipment_id -&gt; id )</title></path>
-<text x='777' y='283' transform='rotate(0 777,283)' class='relName'>Fk_plugin_materiels_output</text>
-<!-- == Fk 'plugin_materiels_equipment_Fk_plugin_materiels_equipment' == -->
-<path id='plugin_materiels_equipment_Fk_plugin_materiels_equipment'  onmouseover="hghl(['plugin_materiels_equipment_Fk_plugin_materiels_equipment','Default.plugin_materiels_equipment.category_id','Default.plugin_materiels_category.id'])" onmouseout="uhghl(['plugin_materiels_equipment_Fk_plugin_materiels_equipment','Default.plugin_materiels_equipment.category_id','Default.plugin_materiels_category.id'])" transform='translate(8,0)' class='scene' d='M 496,304L 256,304' >
-	<title>Fk Fk_plugin_materiels_equipment
-plugin_materiels_equipment ref plugin_materiels_category ( category_id -&gt; id )</title>
-</path>
-<path transform='translate(8,0)' marker-start='url(#foot1)' marker-end='url(#arrow1)'    d='M 496,304L 256,304' ><title>Fk Fk_plugin_materiels_equipment
-plugin_materiels_equipment ref plugin_materiels_category ( category_id -&gt; id )</title></path>
-<text x='283' y='299' transform='rotate(0 283,299)' class='relName'>Fk_plugin_materiels_equipment</text>
-<!-- == Table 'plugin_materiels_entry' == -->
-<rect class='entity' style='stroke:none;' x='976' y='40' width='288' height='144' rx='8' ry='8' />
-<path d='M 976 68 L 976 48 Q 976 40 984 40 L 1256 40 Q 1264 40 1264 48 L 1264 68 L976 68 ' style='fill:url(#tbg_BEF4D0);stroke:1;stroke-opacity:0.1;' />
-<rect class='entity' x='976' y='40' width='288' height='144' rx='8' ry='8' style='fill:none;stroke:#272C28'/>
-<a xlink:href='#Default.plugin_materiels_entry'><text x='1035' y='59' >plugin_materiels_entry</text><title>Table Default.plugin_materiels_entry</title></a>
-  <use id='nn' x='978' y='77' xlink:href='#nn'/><use id='pk' x='978' y='76' xlink:href='#pk'><title>Pk pk_plugin_materiels_entry ( id ) </title></use><a xlink:href='#Default.plugin_materiels_entry_id'><text id='Default.plugin_materiels_entry.id' x='995' y='87'>id</text><title>id
-* integer</title></a>
-<text x='1248' y='88' text-anchor='end' class='colType'>integer</text>  <use id='nn' x='978' y='93' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_entry_kind'><text id='Default.plugin_materiels_entry.kind' x='995' y='103'>kind</text><title>kind
-* varchar(20)
-Achat, Don, Récupération, ...</title></a>
-<text x='1248' y='104' text-anchor='end' class='colType'>varchar(20)</text>  <use id='nn' x='978' y='109' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_entry_equipment_number'><text id='Default.plugin_materiels_entry.equipment_number' x='995' y='119'>equipment_number</text><title>equipment_number
-* integer</title></a>
-<text x='1248' y='120' text-anchor='end' class='colType'>integer</text>  <use id='nn' x='978' y='125' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_entry_equipment_id'><text id='Default.plugin_materiels_entry.equipment_id' x='995' y='135' onmouseover="hghl(['plugin_materiels_entry_Fk_plugin_materiels_entry','Default.plugin_materiels_equipment.id'])" onmouseout="uhghl(['plugin_materiels_entry_Fk_plugin_materiels_entry','Default.plugin_materiels_equipment.id'])">equipment_id</text><title>equipment_id
-* integer</title></a>
-<text x='1248' y='136' text-anchor='end' class='colType'>integer</text><a xlink:href='#Default.plugin_materiels_entry.equipment_id'><use id='fk' x='1252' y='124' xlink:href='#fk'/><title>References plugin_materiels_equipment ( equipment_id -&gt; id ) </title></a>
-  <use id='nn' x='978' y='141' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_entry_entry_date'><text id='Default.plugin_materiels_entry.entry_date' x='995' y='151'>entry_date</text><title>entry_date
-* date</title></a>
-<text x='1248' y='152' text-anchor='end' class='colType'>date</text>  <a xlink:href='#Default.plugin_materiels_entry_additional_comment'><text id='Default.plugin_materiels_entry.additional_comment' x='995' y='167'>additional_comment</text><title>additional_comment
-varchar(255)</title></a>
-<text x='1248' y='168' text-anchor='end' class='colType'>varchar(255)</text>
-<!-- == Table 'plugin_materiels_output' == -->
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-<rect class='entity' x='976' y='200' width='288' height='144' rx='8' ry='8' style='fill:none;stroke:#2C2727'/>
-<a xlink:href='#Default.plugin_materiels_output'><text x='1031' y='219' >plugin_materiels_output</text><title>Table Default.plugin_materiels_output</title></a>
-  <use id='nn' x='978' y='237' xlink:href='#nn'/><use id='pk' x='978' y='236' xlink:href='#pk'><title>Pk pk_plugin_materiels_output ( id ) </title></use><a xlink:href='#Default.plugin_materiels_output_id'><text id='Default.plugin_materiels_output.id' x='995' y='247'>id</text><title>id
-* integer</title></a>
-<text x='1248' y='248' text-anchor='end' class='colType'>integer</text>  <use id='nn' x='978' y='253' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_output_kind'><text id='Default.plugin_materiels_output.kind' x='995' y='263'>kind</text><title>kind
-* varchar(20)
-Vente, Don, Prêt, ...</title></a>
-<text x='1248' y='264' text-anchor='end' class='colType'>varchar(20)</text>  <use id='nn' x='978' y='269' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_output_equipment_number'><text id='Default.plugin_materiels_output.equipment_number' x='995' y='279'>equipment_number</text><title>equipment_number
-* integer</title></a>
-<text x='1248' y='280' text-anchor='end' class='colType'>integer</text>  <use id='nn' x='978' y='285' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_output_equipment_id'><text id='Default.plugin_materiels_output.equipment_id' x='995' y='295' onmouseover="hghl(['plugin_materiels_output_Fk_plugin_materiels_output','Default.plugin_materiels_equipment.id'])" onmouseout="uhghl(['plugin_materiels_output_Fk_plugin_materiels_output','Default.plugin_materiels_equipment.id'])">equipment_id</text><title>equipment_id
-* integer</title></a>
-<text x='1248' y='296' text-anchor='end' class='colType'>integer</text><a xlink:href='#Default.plugin_materiels_output.equipment_id'><use id='fk' x='1252' y='284' xlink:href='#fk'/><title>References plugin_materiels_equipment ( equipment_id -&gt; id ) </title></a>
-  <use id='nn' x='978' y='301' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_output_output_date'><text id='Default.plugin_materiels_output.output_date' x='995' y='311'>output_date</text><title>output_date
-* date</title></a>
-<text x='1248' y='312' text-anchor='end' class='colType'>date</text>  <a xlink:href='#Default.plugin_materiels_output_additional_comment'><text id='Default.plugin_materiels_output.additional_comment' x='995' y='327'>additional_comment</text><title>additional_comment
-varchar(255)</title></a>
-<text x='1248' y='328' text-anchor='end' class='colType'>varchar(255)</text>
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-<a xlink:href='#Default.plugin_materiels_category'><text x='55' y='283' >plugin_materiels_category</text><title>Table Default.plugin_materiels_category</title></a>
-  <use id='nn' x='50' y='301' xlink:href='#nn'/><use id='pk' x='50' y='300' xlink:href='#pk'><title>Pk pk_plugin_materiels_category ( id ) </title></use><a xlink:href='#Default.plugin_materiels_category_id'><text id='Default.plugin_materiels_category.id' x='67' y='311' onmouseover="hghl(['plugin_materiels_equipment_Fk_plugin_materiels_equipment','Default.plugin_materiels_equipment.category_id'])" onmouseout="uhghl(['plugin_materiels_equipment_Fk_plugin_materiels_equipment','Default.plugin_materiels_equipment.category_id'])">id</text><title>id
-* integer</title></a>
-<text x='240' y='312' text-anchor='end' class='colType'>integer</text><a xlink:href='#Default.plugin_materiels_category.id'><use id='ref' x='244' y='300' xlink:href='#ref'/><title>Referred by plugin_materiels_equipment ( category_id -&gt; id ) </title></a>
-  <use id='nn' x='50' y='317' xlink:href='#nn'/><use id='unq' x='50' y='316' xlink:href='#unq'><title>Unq sqlite_autoindex_plugin_materiels_category_1 ( name ) </title></use><a xlink:href='#Default.plugin_materiels_category_name'><text id='Default.plugin_materiels_category.name' x='67' y='327'>name</text><title>name
-* varchar(100)</title></a>
-<text x='240' y='328' text-anchor='end' class='colType'>varchar(100)</text>
-<!-- == Table 'plugin_materiels_equipment' == -->
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-<path d='M 512 276 L 512 256 Q 512 248 520 248 L 728 248 Q 736 248 736 256 L 736 276 L512 276 ' style='fill:url(#tbg_BEE9F4);stroke:1;stroke-opacity:0.1;' />
-<rect class='entity' x='512' y='248' width='224' height='112' rx='8' ry='8' style='fill:none;stroke:#272A2C'/>
-<a xlink:href='#Default.plugin_materiels_equipment'><text x='520' y='267' >plugin_materiels_equipment</text><title>Table Default.plugin_materiels_equipment</title></a>
-  <use id='nn' x='514' y='285' xlink:href='#nn'/><use id='pk' x='514' y='284' xlink:href='#pk'><title>Pk pk_plugin_materiels_equipment ( id ) </title></use><a xlink:href='#Default.plugin_materiels_equipment_id'><text id='Default.plugin_materiels_equipment.id' x='531' y='295' onmouseover="hghl(['plugin_materiels_entry_Fk_plugin_materiels_entry','Default.plugin_materiels_entry.equipment_id','plugin_materiels_output_Fk_plugin_materiels_output','Default.plugin_materiels_output.equipment_id'])" onmouseout="uhghl(['plugin_materiels_entry_Fk_plugin_materiels_entry','Default.plugin_materiels_entry.equipment_id','plugin_materiels_output_Fk_plugin_materiels_output','Default.plugin_materiels_output.equipment_id'])">id</text><title>id
-* integer</title></a>
-<text x='720' y='296' text-anchor='end' class='colType'>integer</text><a xlink:href='#Default.plugin_materiels_equipment.id'><use id='ref' x='724' y='284' xlink:href='#ref'/><title>Referred by plugin_materiels_entry ( equipment_id -&gt; id ) 
-Referred by plugin_materiels_output ( equipment_id -&gt; id ) </title></a>
-  <use id='nn' x='514' y='301' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_equipment_category_id'><text id='Default.plugin_materiels_equipment.category_id' x='531' y='311' onmouseover="hghl(['plugin_materiels_equipment_Fk_plugin_materiels_equipment','Default.plugin_materiels_category.id'])" onmouseout="uhghl(['plugin_materiels_equipment_Fk_plugin_materiels_equipment','Default.plugin_materiels_category.id'])">category_id</text><title>category_id
-* integer</title></a>
-<text x='720' y='312' text-anchor='end' class='colType'>integer</text><a xlink:href='#Default.plugin_materiels_equipment.category_id'><use id='fk' x='724' y='300' xlink:href='#fk'/><title>References plugin_materiels_category ( category_id -&gt; id ) </title></a>
-  <use id='nn' x='514' y='317' xlink:href='#nn'/><a xlink:href='#Default.plugin_materiels_equipment_stock_number'><text id='Default.plugin_materiels_equipment.stock_number' x='531' y='327'>stock_number</text><title>stock_number
-* integer</title></a>
-<text x='720' y='328' text-anchor='end' class='colType'>integer</text>  <use id='nn' x='514' y='333' xlink:href='#nn'/><use id='unq' x='514' y='332' xlink:href='#unq'><title>Unq sqlite_autoindex_plugin_materiels_equipment_1 ( designation ) </title></use><a xlink:href='#Default.plugin_materiels_equipment_designation'><text id='Default.plugin_materiels_equipment.designation' x='531' y='343'>designation</text><title>designation
-* varchar(255)</title></a>
-<text x='720' y='344' text-anchor='end' class='colType'>varchar(255)</text>
-</g></svg>
\ No newline at end of file
diff --git a/doc_db/doc_db.md b/doc_db/doc_db.md
index 3d23546..256bd97 100644
--- a/doc_db/doc_db.md
+++ b/doc_db/doc_db.md
@@ -1,6 +1,6 @@
 ## Plugin materiels database
 
-![img](./LayoutwithTools.svg)
+![img](./schema.png)
 
 ### Table plugin_materiels_category
 | Idx | Field Name | Data Type |
diff --git a/doc_db/shema.png b/doc_db/shema.png
new file mode 100644
index 0000000..2be8f41
Binary files /dev/null and b/doc_db/shema.png differ