diff --git a/doc/Klassendiagramm.drawio b/doc/Klassendiagramm.drawio
index 2e8c002..81d5f11 100644
--- a/doc/Klassendiagramm.drawio
+++ b/doc/Klassendiagramm.drawio
@@ -1,6 +1,6 @@
 <mxfile host="Electron" agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/24.7.17 Chrome/128.0.6613.36 Electron/32.0.1 Safari/537.36" version="24.7.17">
   <diagram id="C5RBs43oDa-KdzZeNtuy" name="Page-1">
-    <mxGraphModel dx="989" dy="582" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
+    <mxGraphModel dx="1434" dy="844" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
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@@ -22,11 +22,11 @@
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           <mxGeometry y="26" width="160" height="40" as="geometry" />
         </mxCell>
-        <mxCell id="_OjnZrDktrtFcgEA-KSX-41" value="&lt;div&gt;&lt;span style=&quot;background-color: initial;&quot;&gt;+ save()&lt;/span&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;+ read()&lt;/div&gt;&lt;div&gt;+ update()&lt;/div&gt;&lt;div&gt;+ delete()&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" parent="_OjnZrDktrtFcgEA-KSX-38" vertex="1">
+        <mxCell id="_OjnZrDktrtFcgEA-KSX-41" value="&lt;div&gt;&lt;span style=&quot;background-color: initial;&quot;&gt;+ getBusiness()&lt;/span&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;&lt;span style=&quot;background-color: initial;&quot;&gt;+ addBusiness()&lt;/span&gt;&lt;/div&gt;&lt;div&gt;+ updateBusiness()&lt;/div&gt;&lt;div&gt;+ delBusiness()&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" parent="_OjnZrDktrtFcgEA-KSX-38" vertex="1">
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         <mxCell id="_OjnZrDktrtFcgEA-KSX-43" value="BusinessModel" style="swimlane;fontStyle=1;align=center;verticalAlign=top;childLayout=stackLayout;horizontal=1;startSize=26;horizontalStack=0;resizeParent=1;resizeParentMax=0;resizeLast=0;collapsible=1;marginBottom=0;whiteSpace=wrap;html=1;" parent="WIyWlLk6GJQsqaUBKTNV-1" vertex="1">
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@@ -34,29 +34,89 @@
         <mxCell id="_OjnZrDktrtFcgEA-KSX-46" value="- getData()&lt;div&gt;+ rowCount()&lt;/div&gt;&lt;div&gt;+ columnCount()&lt;/div&gt;&lt;div&gt;+ Data()&lt;/div&gt;&lt;div&gt;+ headerData()&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" parent="_OjnZrDktrtFcgEA-KSX-43" vertex="1">
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+        <mxCell id="xjCWurhqpCHEkLAYqff9-0" value="PermissionDao" style="swimlane;fontStyle=1;align=center;verticalAlign=top;childLayout=stackLayout;horizontal=1;startSize=26;horizontalStack=0;resizeParent=1;resizeParentMax=0;resizeLast=0;collapsible=1;marginBottom=0;whiteSpace=wrap;html=1;" parent="WIyWlLk6GJQsqaUBKTNV-1" vertex="1">
+          <mxGeometry x="1330" y="50" width="180" height="220" as="geometry" />
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-        <mxCell id="xjCWurhqpCHEkLAYqff9-1" value="&lt;div&gt;- id : int&lt;/div&gt;&lt;div&gt;- description : string&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="xjCWurhqpCHEkLAYqff9-0">
+        <mxCell id="xjCWurhqpCHEkLAYqff9-1" value="&lt;div&gt;- id : int&lt;/div&gt;&lt;div&gt;- description : string&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" parent="xjCWurhqpCHEkLAYqff9-0" vertex="1">
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+        <mxCell id="xjCWurhqpCHEkLAYqff9-2" value="" style="line;strokeWidth=1;fillColor=none;align=left;verticalAlign=middle;spacingTop=-1;spacingLeft=3;spacingRight=3;rotatable=0;labelPosition=right;points=[];portConstraint=eastwest;strokeColor=inherit;" parent="xjCWurhqpCHEkLAYqff9-0" vertex="1">
           <mxGeometry y="90" width="180" height="8" as="geometry" />
         </mxCell>
-        <mxCell id="xjCWurhqpCHEkLAYqff9-3" value="+ method(type): type&lt;div&gt;&lt;br&gt;&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="xjCWurhqpCHEkLAYqff9-0">
-          <mxGeometry y="98" width="180" height="90" as="geometry" />
+        <mxCell id="xjCWurhqpCHEkLAYqff9-3" value="&lt;div&gt;+ getPermissions(User)&lt;/div&gt;&lt;div&gt;+ getPermission()&lt;/div&gt;&lt;div&gt;+ grantPermission()&lt;/div&gt;&lt;div&gt;+ setPermission()&lt;/div&gt;&lt;div&gt;+ revokePermission()&lt;/div&gt;&lt;div&gt;+ savePermission()&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" parent="xjCWurhqpCHEkLAYqff9-0" vertex="1">
+          <mxGeometry y="98" width="180" height="122" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-12" value="User" style="swimlane;fontStyle=1;align=center;verticalAlign=top;childLayout=stackLayout;horizontal=1;startSize=26;horizontalStack=0;resizeParent=1;resizeParentMax=0;resizeLast=0;collapsible=1;marginBottom=0;whiteSpace=wrap;html=1;" vertex="1" parent="WIyWlLk6GJQsqaUBKTNV-1">
+          <mxGeometry x="827" y="50" width="280" height="270" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-13" value="- username : string&lt;div&gt;- password : string&lt;/div&gt;&lt;div&gt;- roleids : roleenum [ ]&lt;/div&gt;&lt;div&gt;- gecos : string&lt;/div&gt;&lt;div&gt;- enabled : bool&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-12">
+          <mxGeometry y="26" width="280" height="84" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-14" value="" style="line;strokeWidth=1;fillColor=none;align=left;verticalAlign=middle;spacingTop=-1;spacingLeft=3;spacingRight=3;rotatable=0;labelPosition=right;points=[];portConstraint=eastwest;strokeColor=inherit;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-12">
+          <mxGeometry y="110" width="280" height="8" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-15" value="+ getRole()&lt;div&gt;+ setRole()&lt;/div&gt;&lt;div&gt;+changePassword(oldpassword, newpassword)&lt;/div&gt;&lt;div&gt;+ getUsername()&lt;/div&gt;&lt;div&gt;+ getPassword()&lt;/div&gt;&lt;div&gt;+ getGecos()&lt;/div&gt;&lt;div&gt;(+ createRole(superuser, admin)????&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-12">
+          <mxGeometry y="118" width="280" height="152" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-18" value="UserRoles" style="swimlane;fontStyle=1;align=center;verticalAlign=top;childLayout=stackLayout;horizontal=1;startSize=26;horizontalStack=0;resizeParent=1;resizeParentMax=0;resizeLast=0;collapsible=1;marginBottom=0;whiteSpace=wrap;html=1;" vertex="1" parent="WIyWlLk6GJQsqaUBKTNV-1">
+          <mxGeometry x="450" y="475" width="160" height="220" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-19" value="+ userrole : Role[ ]" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-18">
+          <mxGeometry y="26" width="160" height="44" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-20" value="" style="line;strokeWidth=1;fillColor=none;align=left;verticalAlign=middle;spacingTop=-1;spacingLeft=3;spacingRight=3;rotatable=0;labelPosition=right;points=[];portConstraint=eastwest;strokeColor=inherit;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-18">
+          <mxGeometry y="70" width="160" height="8" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-21" value="+ method(type): type" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-18">
+          <mxGeometry y="78" width="160" height="142" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-22" value="Role" style="swimlane;fontStyle=1;align=center;verticalAlign=top;childLayout=stackLayout;horizontal=1;startSize=26;horizontalStack=0;resizeParent=1;resizeParentMax=0;resizeLast=0;collapsible=1;marginBottom=0;whiteSpace=wrap;html=1;" vertex="1" parent="WIyWlLk6GJQsqaUBKTNV-1">
+          <mxGeometry x="827" y="430" width="230" height="220" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-23" value="- roletype : string&lt;div&gt;- permissionids : permissionenmum [ ]&lt;/div&gt;&lt;div&gt;&amp;nbsp;&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-22">
+          <mxGeometry y="26" width="230" height="64" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-24" value="" style="line;strokeWidth=1;fillColor=none;align=left;verticalAlign=middle;spacingTop=-1;spacingLeft=3;spacingRight=3;rotatable=0;labelPosition=right;points=[];portConstraint=eastwest;strokeColor=inherit;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-22">
+          <mxGeometry y="90" width="230" height="8" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-25" value="+ getPermission()&lt;div&gt;+ setPermission(superuser, admin)&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;+ getRoletype()&lt;/div&gt;&lt;div&gt;+ setRoletype(superuser, admin)&lt;br&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;/div&gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-22">
+          <mxGeometry y="98" width="230" height="122" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-27" value="Permission" style="swimlane;fontStyle=1;align=center;verticalAlign=top;childLayout=stackLayout;horizontal=1;startSize=26;horizontalStack=0;resizeParent=1;resizeParentMax=0;resizeLast=0;collapsible=1;marginBottom=0;whiteSpace=wrap;html=1;" vertex="1" parent="WIyWlLk6GJQsqaUBKTNV-1">
+          <mxGeometry x="1280" y="430" width="220" height="230" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-28" value="- permissions : permissionenmum [ ]" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-27">
+          <mxGeometry y="26" width="220" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-29" value="" style="line;strokeWidth=1;fillColor=none;align=left;verticalAlign=middle;spacingTop=-1;spacingLeft=3;spacingRight=3;rotatable=0;labelPosition=right;points=[];portConstraint=eastwest;strokeColor=inherit;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-27">
+          <mxGeometry y="52" width="220" height="8" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-30" value="+ method(type): type" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="Yrs2Ar6oVTmmq3gZQ8Z4-27">
+          <mxGeometry y="60" width="220" height="170" as="geometry" />
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-31" value="" style="endArrow=none;html=1;rounded=0;" edge="1" parent="WIyWlLk6GJQsqaUBKTNV-1">
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+            <mxPoint x="280" y="270" as="targetPoint" />
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+          <mxGeometry width="160" relative="1" as="geometry">
+            <mxPoint x="870" y="690" as="sourcePoint" />
+            <mxPoint x="1090" y="570" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="Yrs2Ar6oVTmmq3gZQ8Z4-44" value="" style="endArrow=diamondThin;endFill=0;endSize=24;html=1;rounded=0;exitX=0.535;exitY=-0.018;exitDx=0;exitDy=0;exitPerimeter=0;" edge="1" parent="WIyWlLk6GJQsqaUBKTNV-1" source="Yrs2Ar6oVTmmq3gZQ8Z4-22">
+          <mxGeometry width="160" relative="1" as="geometry">
+            <mxPoint x="897" y="370" as="sourcePoint" />
+            <mxPoint x="950" y="321" as="targetPoint" />
+          </mxGeometry>
         </mxCell>
       </root>
     </mxGraphModel>
diff --git a/doc/Klassendiagramm.pdf b/doc/Klassendiagramm.pdf
index fe8fe1e..6852775 100644
Binary files a/doc/Klassendiagramm.pdf and b/doc/Klassendiagramm.pdf differ