diff --git a/crates/entity/src/license.rs b/crates/entity/src/license.rs
index d25ecbf..da9a77c 100644
--- a/crates/entity/src/license.rs
+++ b/crates/entity/src/license.rs
@@ -3,17 +3,10 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-#[derive(Copy, Clone, Default, Debug, DeriveEntity)]
-pub struct Entity;
-
-impl EntityName for Entity {
-    fn table_name(&self) -> &str {
-        "license"
-    }
-}
-
-#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel, Eq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
+#[sea_orm(table_name = "license")]
 pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
     #[serde(skip_deserializing)]
     pub id: Uuid,
     pub name: String,
@@ -21,66 +14,21 @@ pub struct Model {
     pub end: Option<DateTimeWithTimeZone>,
     pub amount: Option<i32>,
     pub key: String,
-    pub note: Option<String>,
     pub group_id: Uuid,
 }
 
-#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
-pub enum Column {
-    Id,
-    Name,
-    Start,
-    End,
-    Amount,
-    Key,
-    Note,
-    GroupId,
-}
-
-#[derive(Copy, Clone, Debug, EnumIter, DerivePrimaryKey)]
-pub enum PrimaryKey {
-    Id,
-}
-
-impl PrimaryKeyTrait for PrimaryKey {
-    type ValueType = Uuid;
-    fn auto_increment() -> bool {
-        false
-    }
-}
-
-#[derive(Copy, Clone, Debug, EnumIter)]
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
 pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::license_group::Entity",
+        from = "Column::GroupId",
+        to = "super::license_group::Column::Id",
+        on_update = "Cascade",
+        on_delete = "Cascade"
+    )]
     LicenseGroup,
 }
 
-impl ColumnTrait for Column {
-    type EntityName = Entity;
-    fn def(&self) -> ColumnDef {
-        match self {
-            Self::Id => ColumnType::Uuid.def(),
-            Self::Name => ColumnType::String(None).def(),
-            Self::Start => ColumnType::TimestampWithTimeZone.def().null(),
-            Self::End => ColumnType::TimestampWithTimeZone.def().null(),
-            Self::Amount => ColumnType::Integer.def().null(),
-            Self::Key => ColumnType::String(None).def(),
-            Self::Note => ColumnType::String(None).def().null(),
-            Self::GroupId => ColumnType::Uuid.def(),
-        }
-    }
-}
-
-impl RelationTrait for Relation {
-    fn def(&self) -> RelationDef {
-        match self {
-            Self::LicenseGroup => Entity::belongs_to(super::license_group::Entity)
-                .from(Column::GroupId)
-                .to(super::license_group::Column::Id)
-                .into(),
-        }
-    }
-}
-
 impl Related<super::license_group::Entity> for Entity {
     fn to() -> RelationDef {
         Relation::LicenseGroup.def()
diff --git a/crates/entity/src/license_group.rs b/crates/entity/src/license_group.rs
index 8c66757..2ab36c4 100644
--- a/crates/entity/src/license_group.rs
+++ b/crates/entity/src/license_group.rs
@@ -3,63 +3,21 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-#[derive(Copy, Clone, Default, Debug, DeriveEntity)]
-pub struct Entity;
-
-impl EntityName for Entity {
-    fn table_name(&self) -> &str {
-        "license_group"
-    }
-}
-
-#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel, Eq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
+#[sea_orm(table_name = "license_group")]
 pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
     #[serde(skip_deserializing)]
     pub id: Uuid,
     pub name: String,
 }
 
-#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
-pub enum Column {
-    Id,
-    Name,
-}
-
-#[derive(Copy, Clone, Debug, EnumIter, DerivePrimaryKey)]
-pub enum PrimaryKey {
-    Id,
-}
-
-impl PrimaryKeyTrait for PrimaryKey {
-    type ValueType = Uuid;
-    fn auto_increment() -> bool {
-        false
-    }
-}
-
-#[derive(Copy, Clone, Debug, EnumIter)]
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
 pub enum Relation {
+    #[sea_orm(has_many = "super::license::Entity")]
     License,
 }
 
-impl ColumnTrait for Column {
-    type EntityName = Entity;
-    fn def(&self) -> ColumnDef {
-        match self {
-            Self::Id => ColumnType::Uuid.def(),
-            Self::Name => ColumnType::String(None).def(),
-        }
-    }
-}
-
-impl RelationTrait for Relation {
-    fn def(&self) -> RelationDef {
-        match self {
-            Self::License => Entity::has_many(super::license::Entity).into(),
-        }
-    }
-}
-
 impl Related<super::license::Entity> for Entity {
     fn to() -> RelationDef {
         Relation::License.def()
diff --git a/crates/entity/src/user.rs b/crates/entity/src/user.rs
index c9836c0..984cd24 100644
--- a/crates/entity/src/user.rs
+++ b/crates/entity/src/user.rs
@@ -3,63 +3,19 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-#[derive(Copy, Clone, Default, Debug, DeriveEntity)]
-pub struct Entity;
-
-impl EntityName for Entity {
-    fn table_name(&self) -> &str {
-        "user"
-    }
-}
-
-#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel, Eq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
+#[sea_orm(table_name = "user")]
 pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
     #[serde(skip_deserializing)]
     pub id: Uuid,
     pub name: String,
+    #[sea_orm(unique)]
     pub email: String,
     pub hash: String,
 }
 
-#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
-pub enum Column {
-    Id,
-    Name,
-    Email,
-    Hash,
-}
-
-#[derive(Copy, Clone, Debug, EnumIter, DerivePrimaryKey)]
-pub enum PrimaryKey {
-    Id,
-}
-
-impl PrimaryKeyTrait for PrimaryKey {
-    type ValueType = Uuid;
-    fn auto_increment() -> bool {
-        false
-    }
-}
-
-#[derive(Copy, Clone, Debug, EnumIter)]
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
 pub enum Relation {}
 
-impl ColumnTrait for Column {
-    type EntityName = Entity;
-    fn def(&self) -> ColumnDef {
-        match self {
-            Self::Id => ColumnType::Uuid.def(),
-            Self::Name => ColumnType::String(None).def(),
-            Self::Email => ColumnType::String(None).def().unique(),
-            Self::Hash => ColumnType::String(None).def(),
-        }
-    }
-}
-
-impl RelationTrait for Relation {
-    fn def(&self) -> RelationDef {
-        panic!("No RelationDef")
-    }
-}
-
 impl ActiveModelBehavior for ActiveModel {}
diff --git a/crates/migration/src/m20240709_095325_create_license.rs b/crates/migration/src/m20240709_095325_create_license.rs
index e577312..df5f153 100644
--- a/crates/migration/src/m20240709_095325_create_license.rs
+++ b/crates/migration/src/m20240709_095325_create_license.rs
@@ -23,7 +23,6 @@ impl MigrationTrait for Migration {
                     .col(ColumnDef::new(License::End).timestamp_with_time_zone())
                     .col(ColumnDef::new(License::Amount).integer())
                     .col(ColumnDef::new(License::Key).string().not_null())
-                    .col(ColumnDef::new(License::Note).string())
                     .col(ColumnDef::new(License::GroupId).uuid().not_null())
                     .foreign_key(
                         ForeignKey::create()
@@ -55,7 +54,6 @@ enum License {
     Amount,
     Key,
     GroupId,
-    Note,
 }
 
 #[derive(DeriveIden)]