diff --git a/Praktikum3/bt/app/__pycache__/error.cpython-36.pyc b/Praktikum3/bt/app/__pycache__/error.cpython-36.pyc
index c557787..c66344e 100644
Binary files a/Praktikum3/bt/app/__pycache__/error.cpython-36.pyc and b/Praktikum3/bt/app/__pycache__/error.cpython-36.pyc differ
diff --git a/Praktikum3/bt/app/__pycache__/navigation.cpython-36.pyc b/Praktikum3/bt/app/__pycache__/navigation.cpython-36.pyc
index 9e0547f..afe2dcb 100644
Binary files a/Praktikum3/bt/app/__pycache__/navigation.cpython-36.pyc and b/Praktikum3/bt/app/__pycache__/navigation.cpython-36.pyc differ
diff --git a/Praktikum3/bt/app/error.py b/Praktikum3/bt/app/error.py
index a0d7027..455afe9 100644
--- a/Praktikum3/bt/app/error.py
+++ b/Praktikum3/bt/app/error.py
@@ -3,13 +3,25 @@
 import json
 
 import cherrypy
-#from .database import SourceDatabase_cl, EvaluatedDatabase_cl
+from .database import KatfehlerDatabase_cl, KatursacheDatabase_cl, FehlerDatabase_cl
 # Method-Dispatching!
 
 # Übersicht Anforderungen / Methoden
 # (beachte: / relativ zu /navigation, siehe Konfiguration Server!)
 
+#-------------------------------------------------------
+def adjustId_p(id_spl, data_opl):
+#-------------------------------------------------------
 
+   if id_spl == None:
+      data_opl['id'] = ''
+   elif id_spl == '':
+      data_opl['id'] = ''
+   elif id_spl == '0':
+      data_opl['id'] = ''
+   else:
+      data_opl['id'] = id_spl
+   return data_opl
 
 """
 Anforderung             GET               PUT               POST              DELETE
@@ -30,27 +42,87 @@ class KatFehler_cl(object):
    #-------------------------------------------------------
    def __init__(self):
    #-------------------------------------------------------
-      pass
+      self.db_o = KatfehlerDatabase_cl()
 
    #-------------------------------------------------------
-   def GET(self):
+   def GET(self, id = None):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      retVal_o = {
+         'data': None
+      }
+      if id == None:
+         # Anforderung der Liste
+         retVal_o['data'] = self.db_o.read_px()
+      else:
+         # Anforderung eines Dokuments
+         data_o = self.db_o.read_px(id)
+         if data_o != None:
+            retVal_o['data'] = adjustId_p(id, data_o)
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def PUT(self):
+   def PUT(self, data_opl):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      # Sichern der Daten: jetzt wird keine vollständige Seite
+      # zurückgeliefert, sondern nur noch die Information, ob das
+      # Speichern erfolgreich war
+
+      retVal_o = {
+         'id': None
+      }
+
+      # data_opl: Dictionary mit den gelieferten key-value-Paaren
+      # hier müsste man prüfen, ob die Daten korrekt vorliegen!
+
+      id_s = data_opl["id_s"]
+      data_o = {
+         'name': data_opl["name_s"],
+         'id': data_opl["id_s"]
+         }
+      # Update-Operation
+      retVal_o['id'] = id_s
+      if self.db_o.update_px(id_s, data_o):
+         pass
+      else:
+         retVal_o['id'] = None
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def POST(self):
+   def POST(self, data_opl):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      retVal_o = {
+         'id': None
+      }
+
+      # data_opl: Dictionary mit den gelieferten key-value-Paaren
+
+      # hier müsste man prüfen, ob die Daten korrekt vorliegen!
+
+      data_o = {
+         'name': data_opl["name_s"]
+      }
+      # Create-Operation
+      id_s = self.db_o.create_px(data_o)
+      retVal_o['id'] = id_s
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def DELETE(self):
+   def DELETE(self, id):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      # Eintrag löschen, nur noch Rückmeldung liefern
+      retVal_o = {
+         'id': id
+      }
+
+      if self.db_o.delete_px(id):
+         pass
+      else:
+         retVal_o['id'] = None
+
+      return retVal_o
 
 
 
@@ -73,27 +145,87 @@ class KatUrsache_cl(object):
    #-------------------------------------------------------
    def __init__(self):
    #-------------------------------------------------------
-      pass
+      self.db_o = KatursacheDatabase_cl()
 
    #-------------------------------------------------------
-   def GET(self):
+   def GET(self, id = None):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      retVal_o = {
+         'data': None
+      }
+      if id == None:
+         # Anforderung der Liste
+         retVal_o['data'] = self.db_o.read_px()
+      else:
+         # Anforderung eines Dokuments
+         data_o = self.db_o.read_px(id)
+         if data_o != None:
+            retVal_o['data'] = adjustId_p(id, data_o)
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def PUT(self):
+   def PUT(self, data_opl):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      # Sichern der Daten: jetzt wird keine vollständige Seite
+      # zurückgeliefert, sondern nur noch die Information, ob das
+      # Speichern erfolgreich war
+
+      retVal_o = {
+         'id': None
+      }
+
+      # data_opl: Dictionary mit den gelieferten key-value-Paaren
+      # hier müsste man prüfen, ob die Daten korrekt vorliegen!
+
+      id_s = data_opl["id_s"]
+      data_o = {
+         'name': data_opl["name_s"],
+         'id': data_opl["id_s"]
+         }
+      # Update-Operation
+      retVal_o['id'] = id_s
+      if self.db_o.update_px(id_s, data_o):
+         pass
+      else:
+         retVal_o['id'] = None
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def POST(self):
+   def POST(self, data_opl):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      retVal_o = {
+         'id': None
+      }
+
+      # data_opl: Dictionary mit den gelieferten key-value-Paaren
+
+      # hier müsste man prüfen, ob die Daten korrekt vorliegen!
+
+      data_o = {
+         'name': data_opl["name_s"]
+      }
+      # Create-Operation
+      id_s = self.db_o.create_px(data_o)
+      retVal_o['id'] = id_s
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def DELETE(self):
+   def DELETE(self, id):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      # Eintrag löschen, nur noch Rückmeldung liefern
+      retVal_o = {
+         'id': id
+      }
+
+      if self.db_o.delete_px(id):
+         pass
+      else:
+         retVal_o['id'] = None
+
+      return retVal_o
 
 
 
@@ -119,22 +251,87 @@ class Fehler_cl(object):
    #-------------------------------------------------------
    def __init__(self):
    #-------------------------------------------------------
-      pass
+      self.db_o = FehlerDatabase_cl()
 
    #-------------------------------------------------------
-   def GET(self):
+   def GET(self, id = None):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      retVal_o = {
+         'data': None
+      }
+      if id == None:
+         # Anforderung der Liste
+         retVal_o['data'] = self.db_o.read_px()
+      else:
+         # Anforderung eines Dokuments
+         data_o = self.db_o.read_px(id)
+         if data_o != None:
+            retVal_o['data'] = adjustId_p(id, data_o)
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def PUT(self):
+   def PUT(self, data_opl):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      # Sichern der Daten: jetzt wird keine vollständige Seite
+      # zurückgeliefert, sondern nur noch die Information, ob das
+      # Speichern erfolgreich war
+
+      retVal_o = {
+         'id': None
+      }
+
+      # data_opl: Dictionary mit den gelieferten key-value-Paaren
+      # hier müsste man prüfen, ob die Daten korrekt vorliegen!
+
+      id_s = data_opl["id_s"]
+      data_o = {
+         'name': data_opl["name_s"],
+         'id': data_opl["id_s"]
+         }
+      # Update-Operation
+      retVal_o['id'] = id_s
+      if self.db_o.update_px(id_s, data_o):
+         pass
+      else:
+         retVal_o['id'] = None
+
+      return retVal_o
 
    #-------------------------------------------------------
-   def POST(self):
+   def POST(self, data_opl):
    #-------------------------------------------------------
-      return json.dumps(retVal_o)
+      retVal_o = {
+         'id': None
+      }
+
+      # data_opl: Dictionary mit den gelieferten key-value-Paaren
+
+      # hier müsste man prüfen, ob die Daten korrekt vorliegen!
+
+      data_o = {
+         'name': data_opl["name_s"]
+      }
+      # Create-Operation
+      id_s = self.db_o.create_px(data_o)
+      retVal_o['id'] = id_s
+
+      return retVal_o
+
+   #-------------------------------------------------------
+   def DELETE(self, id):
+   #-------------------------------------------------------
+      # Eintrag löschen, nur noch Rückmeldung liefern
+      retVal_o = {
+         'id': id
+      }
+
+      if self.db_o.delete_px(id):
+         pass
+      else:
+         retVal_o['id'] = None
+
+      return retVal_o
 
       
 # EOF
\ No newline at end of file
diff --git a/Praktikum3/bt/app/navigation.py b/Praktikum3/bt/app/navigation.py
index 232fcb6..0e30ed9 100755
--- a/Praktikum3/bt/app/navigation.py
+++ b/Praktikum3/bt/app/navigation.py
@@ -38,7 +38,8 @@ class Navigation_cl(object):
          {'action': 'komponente'   , 'text': 'Pflege Komponenten'},
          {'action': 'qsmitarbeiter'   , 'text': 'Pflege Daten QS-Mitarbeiter'},
          {'action': 'swentwickler'   , 'text': 'Pflege Daten SW-Entwickler'},
-         {'action': 'kategorien'   , 'text': 'Pflege Kategorien'},
+         {'action': 'katfehler'   , 'text': 'Pflege Fehler-Kategorien'},
+         {'action': 'katursache'   , 'text': 'Pflege Fehlerursachen-Kategorien'},
          {'action': 'prolist'   , 'text': 'Auswertung Projekte/Fehler'},
          {'action': 'catlist'   , 'text': 'Auswertung Kategorien/Fehler'}
       ]
diff --git a/Praktikum3/bt/data/katfehler/1.dat b/Praktikum3/bt/data/katfehler/1.dat
new file mode 100644
index 0000000..fc37623
--- /dev/null
+++ b/Praktikum3/bt/data/katfehler/1.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerkategorie1",
+   "id": "1"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katfehler/2.dat b/Praktikum3/bt/data/katfehler/2.dat
new file mode 100644
index 0000000..201fc95
--- /dev/null
+++ b/Praktikum3/bt/data/katfehler/2.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerkategorie2",
+   "id": "2"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katfehler/3.dat b/Praktikum3/bt/data/katfehler/3.dat
new file mode 100644
index 0000000..4e887a4
--- /dev/null
+++ b/Praktikum3/bt/data/katfehler/3.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerkategorie3",
+   "id": "3"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katfehler/5.dat b/Praktikum3/bt/data/katfehler/5.dat
new file mode 100644
index 0000000..f7f1a91
--- /dev/null
+++ b/Praktikum3/bt/data/katfehler/5.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerkategorie5",
+   "id": "5"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katfehler/6.dat b/Praktikum3/bt/data/katfehler/6.dat
new file mode 100644
index 0000000..2aa9797
--- /dev/null
+++ b/Praktikum3/bt/data/katfehler/6.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerkategorie6",
+   "id": "6"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katfehler/maxid.dat b/Praktikum3/bt/data/katfehler/maxid.dat
index c227083..62f9457 100755
--- a/Praktikum3/bt/data/katfehler/maxid.dat
+++ b/Praktikum3/bt/data/katfehler/maxid.dat
@@ -1 +1 @@
-0
\ No newline at end of file
+6
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katursache/1.dat b/Praktikum3/bt/data/katursache/1.dat
new file mode 100644
index 0000000..81a3401
--- /dev/null
+++ b/Praktikum3/bt/data/katursache/1.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerursachekategorie1",
+   "id": "1"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katursache/2.dat b/Praktikum3/bt/data/katursache/2.dat
new file mode 100644
index 0000000..148ce15
--- /dev/null
+++ b/Praktikum3/bt/data/katursache/2.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerursachekategorie2",
+   "id": "2"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katursache/3.dat b/Praktikum3/bt/data/katursache/3.dat
new file mode 100644
index 0000000..ad8313d
--- /dev/null
+++ b/Praktikum3/bt/data/katursache/3.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerursachekategorie3",
+   "id": "3"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katursache/4.dat b/Praktikum3/bt/data/katursache/4.dat
new file mode 100644
index 0000000..8ccc006
--- /dev/null
+++ b/Praktikum3/bt/data/katursache/4.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerursachekategorie4",
+   "id": "4"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katursache/6.dat b/Praktikum3/bt/data/katursache/6.dat
new file mode 100644
index 0000000..73a4c4b
--- /dev/null
+++ b/Praktikum3/bt/data/katursache/6.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerursachekategorie6",
+   "id": "6"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katursache/7.dat b/Praktikum3/bt/data/katursache/7.dat
new file mode 100644
index 0000000..a76a77e
--- /dev/null
+++ b/Praktikum3/bt/data/katursache/7.dat
@@ -0,0 +1,4 @@
+{
+   "name": "Fehlerursachekategorie7",
+   "id": "7"
+}
\ No newline at end of file
diff --git a/Praktikum3/bt/data/katursache/maxid.dat b/Praktikum3/bt/data/katursache/maxid.dat
index c227083..c793025 100755
--- a/Praktikum3/bt/data/katursache/maxid.dat
+++ b/Praktikum3/bt/data/katursache/maxid.dat
@@ -1 +1 @@
-0
\ No newline at end of file
+7
\ No newline at end of file
diff --git a/Praktikum3/bt/static/js/app.js b/Praktikum3/bt/static/js/app.js
index a273d31..45b2c2d 100755
--- a/Praktikum3/bt/static/js/app.js
+++ b/Praktikum3/bt/static/js/app.js
@@ -33,6 +33,12 @@ APP.Application_cl = class {
       this.listSwEntwickler_o     = new APP.ListView_cl('swentwickler', '/swentwickler/', 'swentwicklerlist.tpl');
       this.detailSwEntwickler_o   = new APP.DetailView_cl('swentwickler', '/swentwickler/', 'swentwicklerdetail.tpl');
 
+      this.listKatFehler_o     = new APP.ListView_cl('katfehler', '/katfehler/', 'katfehlerlist.tpl');
+      this.detailKatFehler_o   = new APP.DetailView_cl('katfehler', '/katfehler/', 'katfehlerdetail.tpl');
+
+      this.listKatUrsache_o     = new APP.ListView_cl('katursache', '/katursache/', 'katursachelist.tpl');
+      this.detailKatUrsache_o   = new APP.DetailView_cl('katursache', '/katursache/', 'katursachedetail.tpl');
+
       // this.listSources_o     = new APP.ListView_cl('source', '/source/', 'sourceslist.tpl');
       // this.detailSources_o   = new APP.SourceDetailView_cl('source', '/source/', 'sourcedetail.tpl');
       // this.listEvaluated_o   = new APP.ListView_cl('evaluated', '/evaluated/', 'evaluatedlist.tpl');
@@ -97,6 +103,28 @@ APP.Application_cl = class {
             // Detailformular im Content-Bereich anzeigen
             self_opl.setContent_p(self_opl.detailSwEntwickler_o, data_apl[1]);
             break;
+         case 'katfehler':
+            self_opl.setContent_p(self_opl.listKatFehler_o, data_apl[1]);
+            break;
+         case 'katfehler.add':
+            // (leeres) Detailformular im Content-Bereich anzeigen
+            self_opl.setContent_p(self_opl.detailKatFehler_o, data_apl[1]);
+            break;
+         case 'katfehler.edit':
+            // Detailformular im Content-Bereich anzeigen
+            self_opl.setContent_p(self_opl.detailKatFehler_o, data_apl[1]);
+            break;
+         case 'katursache':
+            self_opl.setContent_p(self_opl.listKatUrsache_o, data_apl[1]);
+            break;
+         case 'katursache.add':
+            // (leeres) Detailformular im Content-Bereich anzeigen
+            self_opl.setContent_p(self_opl.detailKatUrsache_o, data_apl[1]);
+            break;
+         case 'katursache.edit':
+            // Detailformular im Content-Bereich anzeigen
+            self_opl.setContent_p(self_opl.detailKatUrsache_o, data_apl[1]);
+            break;
          default:
             console.warn('[Application_cl] unbekannte app-Notification: '+data_apl[0]);
             break;
diff --git a/Praktikum3/bt/templates/.DS_Store b/Praktikum3/bt/templates/.DS_Store
index 8790c54..cf404a5 100644
Binary files a/Praktikum3/bt/templates/.DS_Store and b/Praktikum3/bt/templates/.DS_Store differ
diff --git a/Praktikum3/bt/templates/katfehlerdetail.tpl b/Praktikum3/bt/templates/katfehlerdetail.tpl
new file mode 100644
index 0000000..91057ff
--- /dev/null
+++ b/Praktikum3/bt/templates/katfehlerdetail.tpl
@@ -0,0 +1,20 @@
+<!-- Template -->
+<form id="idForm" class="clContent">
+   <h2 id="idContentHeader" class="clContentHeader">
+      Pflege Fehlerkategorien
+   </h2>
+   <div id="idContentArea" class="clContentArea">
+
+   <input type="hidden" value="#context.data.id#" id="id_s" name="id_s" />
+   <div class="clFormRow">
+      <label for="name_s">Name <span class="clRequired"></span></label>
+      <input type="text" value="#context.data.name#" id="name_s" name="name_s" autofocus required />
+   </div>
+
+   </div>
+   <div id="idButtonArea" class="clButtonArea">
+      <button data-action="back" class="clButton">Zurück</button>
+      <button data-action="save" class="clButton">Speichern</button>
+   </div>
+</form>
+<!-- EOF -->
\ No newline at end of file
diff --git a/Praktikum3/bt/templates/katfehlerlist.tpl b/Praktikum3/bt/templates/katfehlerlist.tpl
new file mode 100755
index 0000000..d53f3f4
--- /dev/null
+++ b/Praktikum3/bt/templates/katfehlerlist.tpl
@@ -0,0 +1,25 @@
+<!-- Template -->
+<div id="idListContent" class="clContent">
+   <h2 id="idContentHeader" class="clContentHeader">
+      Pflege Fehlerkategorien
+   </h2>
+   <div id="idContentArea" class="clContentArea">
+      <table id="idList">
+         <tr class="listheader"><th>Name</th><th>ID</th></tr>
+      @var rows_o = context['data'];@
+      @for var key_s in rows_o@
+         <tr id='#key_s#'>
+         @var row_o = rows_o[key_s];@
+            <td>#row_o['name']#</td><td>#row_o['id']#</td>
+         </tr>
+      @endfor@
+      </table>
+   </div>
+   <div id="idButtonArea" class="clButtonArea">
+      <button data-action="add" class="clButton">Hinzufügen</button>
+      <button data-action="edit" class="clButton">Bearbeiten</button>
+      <button data-action="delete" class="clButton">Löschen</button>
+   </div>
+</div>
+
+<!-- EOF -->
\ No newline at end of file
diff --git a/Praktikum3/bt/templates/katursachedetail.tpl b/Praktikum3/bt/templates/katursachedetail.tpl
new file mode 100644
index 0000000..79940ca
--- /dev/null
+++ b/Praktikum3/bt/templates/katursachedetail.tpl
@@ -0,0 +1,20 @@
+<!-- Template -->
+<form id="idForm" class="clContent">
+   <h2 id="idContentHeader" class="clContentHeader">
+      Pflege Fehlerursachekategorien
+   </h2>
+   <div id="idContentArea" class="clContentArea">
+
+   <input type="hidden" value="#context.data.id#" id="id_s" name="id_s" />
+   <div class="clFormRow">
+      <label for="name_s">Name <span class="clRequired"></span></label>
+      <input type="text" value="#context.data.name#" id="name_s" name="name_s" autofocus required />
+   </div>
+
+   </div>
+   <div id="idButtonArea" class="clButtonArea">
+      <button data-action="back" class="clButton">Zurück</button>
+      <button data-action="save" class="clButton">Speichern</button>
+   </div>
+</form>
+<!-- EOF -->
\ No newline at end of file
diff --git a/Praktikum3/bt/templates/katursachelist.tpl b/Praktikum3/bt/templates/katursachelist.tpl
new file mode 100755
index 0000000..9cfba25
--- /dev/null
+++ b/Praktikum3/bt/templates/katursachelist.tpl
@@ -0,0 +1,25 @@
+<!-- Template -->
+<div id="idListContent" class="clContent">
+   <h2 id="idContentHeader" class="clContentHeader">
+      Pflege Fehlerursachekategorien
+   </h2>
+   <div id="idContentArea" class="clContentArea">
+      <table id="idList">
+         <tr class="listheader"><th>Name</th><th>ID</th></tr>
+      @var rows_o = context['data'];@
+      @for var key_s in rows_o@
+         <tr id='#key_s#'>
+         @var row_o = rows_o[key_s];@
+            <td>#row_o['name']#</td><td>#row_o['id']#</td>
+         </tr>
+      @endfor@
+      </table>
+   </div>
+   <div id="idButtonArea" class="clButtonArea">
+      <button data-action="add" class="clButton">Hinzufügen</button>
+      <button data-action="edit" class="clButton">Bearbeiten</button>
+      <button data-action="delete" class="clButton">Löschen</button>
+   </div>
+</div>
+
+<!-- EOF -->
\ No newline at end of file