diff --git a/cats/migrations/0004_alter_unique_together_on_models.py b/cats/migrations/0004_alter_unique_together_on_models.py
new file mode 100644
index 0000000..144e6f6
--- /dev/null
+++ b/cats/migrations/0004_alter_unique_together_on_models.py
@@ -0,0 +1,29 @@
+# Generated by Django 4.2.16 on 2024-09-18 16:48
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("cats", "0003_make_models_managed"),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name="incorrectanswer",
+            unique_together={("lp_id", "q_id")},
+        ),
+        migrations.AlterUniqueTogether(
+            name="questiontypev2",
+            unique_together={("qt_id", "lang")},
+        ),
+        migrations.AlterUniqueTogether(
+            name="user",
+            unique_together={("user_id", "root")},
+        ),
+        migrations.AlterUniqueTogether(
+            name="useraddress",
+            unique_together={("user_id", "root")},
+        ),
+    ]
diff --git a/cats/migrations/0005_rename_auto_id_fields.py b/cats/migrations/0005_rename_auto_id_fields.py
new file mode 100644
index 0000000..4bc9f58
--- /dev/null
+++ b/cats/migrations/0005_rename_auto_id_fields.py
@@ -0,0 +1,48 @@
+# Generated by Django 4.2.16 on 2024-09-18 16:50
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("cats", "0004_alter_unique_together_on_models"),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name="answer",
+            old_name="a_id",
+            new_name="id",
+        ),
+        migrations.RenameField(
+            model_name="learnprogress",
+            old_name="lp_id",
+            new_name="id",
+        ),
+        migrations.RenameField(
+            model_name="question",
+            old_name="q_id",
+            new_name="id",
+        ),
+        migrations.RenameField(
+            model_name="questiontype",
+            old_name="qt_id",
+            new_name="id",
+        ),
+        migrations.RenameField(
+            model_name="statistics",
+            old_name="stat_id",
+            new_name="id",
+        ),
+        migrations.RenameField(
+            model_name="topic",
+            old_name="t_id",
+            new_name="id",
+        ),
+        migrations.RenameField(
+            model_name="topictype",
+            old_name="type_id",
+            new_name="id",
+        ),
+    ]
diff --git a/cats/migrations/0006_change_auto_id_fields_to_bigautofield.py b/cats/migrations/0006_change_auto_id_fields_to_bigautofield.py
new file mode 100644
index 0000000..90c9f7d
--- /dev/null
+++ b/cats/migrations/0006_change_auto_id_fields_to_bigautofield.py
@@ -0,0 +1,62 @@
+# Generated by Django 4.2.16 on 2024-09-18 16:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("cats", "0005_rename_auto_id_fields"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="answer",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="learnprogress",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="question",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="questiontype",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="statistics",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="topic",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="topictype",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+            ),
+        ),
+    ]
diff --git a/cats/models.py b/cats/models.py
index e4462ea..c2b03d2 100644
--- a/cats/models.py
+++ b/cats/models.py
@@ -8,68 +8,27 @@
 from django.db import models
 
 
-class Answer(models.Model):
-    a_id = models.AutoField(primary_key=True)
-    q_id = models.IntegerField()
-    answer = models.TextField()
-    correct = models.IntegerField()
-    ref_a_id = models.IntegerField(blank=True, null=True)
+class TopicType(models.Model):
+    text = models.CharField(max_length=255)
 
     class Meta:
-        db_table = 'answers'
+        db_table = 'topic_type'
 
 
-class IncorrectAnswer(models.Model):
-    lp_id = models.IntegerField(primary_key=True)  # The composite primary key (lp_id, q_id) found, that is not supported. The first column is selected.
-    q_id = models.IntegerField()
+class Topic(models.Model):
+    topic = models.CharField(unique=True, max_length=50, db_comment='Thema')
+    active = models.IntegerField()
+    numofqu = models.IntegerField(db_column='numOfQu')  # Field name made lowercase.
+    percentage = models.IntegerField()
+    lang = models.CharField(max_length=42, blank=True, null=True)
+    type_id = models.IntegerField(blank=True, null=True)
 
     class Meta:
-        db_table = 'answers_incorrect'
-        unique_together = (('lp_id', 'q_id'),)
-
-
-class LearnProgress(models.Model):
-    lp_id = models.AutoField(primary_key=True, db_comment='Schlüssel')
-    user_id = models.CharField(max_length=15)
-    root = models.CharField(max_length=45)
-    date = models.DateTimeField(db_comment='Uhrzeit und Datum')
-    t_id = models.IntegerField(db_comment='Themen ID')
-    number = models.IntegerField(db_comment='Anzahl der Fragen')
-    correct = models.IntegerField(db_comment='Richtige Fragen')
-    wrong = models.IntegerField(db_comment='Anzahl der falschen Antworten')
-    percentage = models.DecimalField(max_digits=5, decimal_places=0, blank=True, null=True)
-    uploaded = models.IntegerField(blank=True, null=True)
-    passed = models.IntegerField()
-
-    class Meta:
-        db_table = 'learnprogress'
-
-
-class QuestionDescription(models.Model):
-    q_id = models.IntegerField(primary_key=True)
-    description = models.TextField()
-
-    class Meta:
-        db_table = 'question_description'
-
-
-class Question(models.Model):
-    q_id = models.AutoField(primary_key=True, db_comment='Primärschlüssel')
-    qt_id = models.IntegerField(db_comment='Fragetyp')
-    t_id = models.IntegerField(db_comment='Topic_id')
-    question = models.TextField(db_comment='Frage')
-    active = models.CharField(max_length=1)
-    description = models.CharField(max_length=1)
-    ref_q_id = models.IntegerField(blank=True, null=True)
-    translationstatus = models.IntegerField(blank=True, null=True)
-
-    class Meta:
-        db_table = 'questions'
-        db_table_comment = 'Fragen'
+        db_table = 'topics'
+        db_table_comment = 'Themen'
 
 
 class QuestionType(models.Model):
-    qt_id = models.AutoField(primary_key=True, db_comment='Fragetypenschlüssel')
     de = models.CharField(db_column='DE', max_length=25, db_comment='Fragetyp')  # Field name made lowercase.
     en = models.CharField(db_column='EN', max_length=25)  # Field name made lowercase.
     fr = models.CharField(db_column='FR', max_length=25, blank=True, null=True)  # Field name made lowercase.
@@ -90,51 +49,36 @@ class QuestionTypeV2(models.Model):
         db_table_comment = 'Fragetypen'
 
 
-class SchemaVersion(models.Model):
-    version = models.IntegerField(unique=True)
-    when = models.DateTimeField()
+class Question(models.Model):
+    qt_id = models.IntegerField(db_comment='Fragetyp')
+    t_id = models.IntegerField(db_comment='Topic_id')
+    question = models.TextField(db_comment='Frage')
+    active = models.CharField(max_length=1)
+    description = models.CharField(max_length=1)
+    ref_q_id = models.IntegerField(blank=True, null=True)
+    translationstatus = models.IntegerField(blank=True, null=True)
 
     class Meta:
-        db_table = 'schema_version'
+        db_table = 'questions'
+        db_table_comment = 'Fragen'
 
 
-class Statistics(models.Model):
-    stat_id = models.AutoField(primary_key=True, db_comment='Primärschlüssel')
-    q_id = models.IntegerField(db_comment='Frage Id')
-    count = models.IntegerField(db_comment='Zählen von Antworten')
+class QuestionDescription(models.Model):
+    q_id = models.IntegerField(primary_key=True)
+    description = models.TextField()
 
     class Meta:
-        db_table = 'statistics'
+        db_table = 'question_description'
 
 
-class Temp(models.Model):
-    uid = models.CharField(max_length=10, blank=True, null=True)
-    number = models.IntegerField(blank=True, null=True)
+class Answer(models.Model):
+    q_id = models.IntegerField()
+    answer = models.TextField()
+    correct = models.IntegerField()
+    ref_a_id = models.IntegerField(blank=True, null=True)
 
     class Meta:
-        db_table = 'temp'
-
-
-class TopicType(models.Model):
-    type_id = models.AutoField(primary_key=True)
-    text = models.CharField(max_length=255)
-
-    class Meta:
-        db_table = 'topic_type'
-
-
-class Topic(models.Model):
-    t_id = models.AutoField(primary_key=True, db_comment='Primärschlüssel')
-    topic = models.CharField(unique=True, max_length=50, db_comment='Thema')
-    active = models.IntegerField()
-    numofqu = models.IntegerField(db_column='numOfQu')  # Field name made lowercase.
-    percentage = models.IntegerField()
-    lang = models.CharField(max_length=42, blank=True, null=True)
-    type_id = models.IntegerField(blank=True, null=True)
-
-    class Meta:
-        db_table = 'topics'
-        db_table_comment = 'Themen'
+        db_table = 'answers'
 
 
 class User(models.Model):
@@ -166,3 +110,52 @@ class UserAddress(models.Model):
     class Meta:
         db_table = 'user_address'
         unique_together = (('user_id', 'root'),)
+
+
+class LearnProgress(models.Model):
+    user_id = models.CharField(max_length=15)
+    root = models.CharField(max_length=45)
+    date = models.DateTimeField(db_comment='Uhrzeit und Datum')
+    t_id = models.IntegerField(db_comment='Themen ID')
+    number = models.IntegerField(db_comment='Anzahl der Fragen')
+    correct = models.IntegerField(db_comment='Richtige Fragen')
+    wrong = models.IntegerField(db_comment='Anzahl der falschen Antworten')
+    percentage = models.DecimalField(max_digits=5, decimal_places=0, blank=True, null=True)
+    uploaded = models.IntegerField(blank=True, null=True)
+    passed = models.IntegerField()
+
+    class Meta:
+        db_table = 'learnprogress'
+
+
+class IncorrectAnswer(models.Model):
+    lp_id = models.IntegerField(primary_key=True)  # The composite primary key (lp_id, q_id) found, that is not supported. The first column is selected.
+    q_id = models.IntegerField()
+
+    class Meta:
+        db_table = 'answers_incorrect'
+        unique_together = (('lp_id', 'q_id'),)
+
+
+class SchemaVersion(models.Model):
+    version = models.IntegerField(unique=True)
+    when = models.DateTimeField()
+
+    class Meta:
+        db_table = 'schema_version'
+
+
+class Statistics(models.Model):
+    q_id = models.IntegerField(db_comment='Frage Id')
+    count = models.IntegerField(db_comment='Zählen von Antworten')
+
+    class Meta:
+        db_table = 'statistics'
+
+
+class Temp(models.Model):
+    uid = models.CharField(max_length=10, blank=True, null=True)
+    number = models.IntegerField(blank=True, null=True)
+
+    class Meta:
+        db_table = 'temp'