diff --git a/examples/cli/src/entity/cake.rs b/examples/cli/src/entity/cake.rs
index 87ee5f1a..9b786a5f 100644
--- a/examples/cli/src/entity/cake.rs
+++ b/examples/cli/src/entity/cake.rs
@@ -53,14 +53,8 @@ impl ColumnTrait for Column {
 impl RelationTrait for Relation {
     fn def(&self) -> RelationDef {
         match self {
-            Self::CakeFilling => Entity::has_many(super::cake_filling::Entity)
-                .from(Column::Id)
-                .to(super::cake_filling::Column::CakeId)
-                .into(),
-            Self::Fruit => Entity::has_many(super::fruit::Entity)
-                .from(Column::Id)
-                .to(super::fruit::Column::CakeId)
-                .into(),
+            Self::CakeFilling => Entity::has_many(super::cake_filling::Entity).into(),
+            Self::Fruit => Entity::has_many(super::fruit::Entity).into(),
         }
     }
 }
diff --git a/examples/cli/src/entity/cake_filling.rs b/examples/cli/src/entity/cake_filling.rs
index b35279d4..d5b4b8b6 100644
--- a/examples/cli/src/entity/cake_filling.rs
+++ b/examples/cli/src/entity/cake_filling.rs
@@ -54,11 +54,11 @@ impl ColumnTrait for Column {
 impl RelationTrait for Relation {
     fn def(&self) -> RelationDef {
         match self {
-            Self::Cake => Entity::has_one(super::cake::Entity)
+            Self::Cake => Entity::belongs_to(super::cake::Entity)
                 .from(Column::CakeId)
                 .to(super::cake::Column::Id)
                 .into(),
-            Self::Filling => Entity::has_one(super::filling::Entity)
+            Self::Filling => Entity::belongs_to(super::filling::Entity)
                 .from(Column::FillingId)
                 .to(super::filling::Column::Id)
                 .into(),
diff --git a/examples/cli/src/entity/filling.rs b/examples/cli/src/entity/filling.rs
index 4134652f..e4563e55 100644
--- a/examples/cli/src/entity/filling.rs
+++ b/examples/cli/src/entity/filling.rs
@@ -52,10 +52,7 @@ impl ColumnTrait for Column {
 impl RelationTrait for Relation {
     fn def(&self) -> RelationDef {
         match self {
-            Self::CakeFilling => Entity::has_many(super::cake_filling::Entity)
-                .from(Column::Id)
-                .to(super::cake_filling::Column::FillingId)
-                .into(),
+            Self::CakeFilling => Entity::has_many(super::cake_filling::Entity).into(),
         }
     }
 }
diff --git a/examples/cli/src/entity/fruit.rs b/examples/cli/src/entity/fruit.rs
index c9b6d27a..f65d5b38 100644
--- a/examples/cli/src/entity/fruit.rs
+++ b/examples/cli/src/entity/fruit.rs
@@ -39,7 +39,6 @@ impl PrimaryKeyTrait for PrimaryKey {
 #[derive(Copy, Clone, Debug, EnumIter)]
 pub enum Relation {
     Cake,
-    Vendor,
 }
 
 impl ColumnTrait for Column {
@@ -56,14 +55,10 @@ impl ColumnTrait for Column {
 impl RelationTrait for Relation {
     fn def(&self) -> RelationDef {
         match self {
-            Self::Cake => Entity::has_one(super::cake::Entity)
+            Self::Cake => Entity::belongs_to(super::cake::Entity)
                 .from(Column::CakeId)
                 .to(super::cake::Column::Id)
                 .into(),
-            Self::Vendor => Entity::has_many(super::vendor::Entity)
-                .from(Column::Id)
-                .to(super::vendor::Column::FruitId)
-                .into(),
         }
     }
 }
@@ -74,19 +69,10 @@ impl Related<super::cake::Entity> for Entity {
     }
 }
 
-impl Related<super::vendor::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::Vendor.def()
-    }
-}
-
 impl Model {
     pub fn find_cake(&self) -> Select<super::cake::Entity> {
         Entity::find_related().belongs_to::<Entity>(self)
     }
-    pub fn find_vendor(&self) -> Select<super::vendor::Entity> {
-        Entity::find_related().belongs_to::<Entity>(self)
-    }
 }
 
 impl ActiveModelBehavior for ActiveModel {}
diff --git a/examples/cli/src/entity/mod.rs b/examples/cli/src/entity/mod.rs
index 395d29f9..006f7e80 100644
--- a/examples/cli/src/entity/mod.rs
+++ b/examples/cli/src/entity/mod.rs
@@ -4,4 +4,3 @@ pub mod cake;
 pub mod cake_filling;
 pub mod filling;
 pub mod fruit;
-pub mod vendor;
diff --git a/examples/cli/src/entity/prelude.rs b/examples/cli/src/entity/prelude.rs
index b4e85c78..b4c1c94f 100644
--- a/examples/cli/src/entity/prelude.rs
+++ b/examples/cli/src/entity/prelude.rs
@@ -4,4 +4,3 @@ pub use super::cake::Entity as Cake;
 pub use super::cake_filling::Entity as CakeFilling;
 pub use super::filling::Entity as Filling;
 pub use super::fruit::Entity as Fruit;
-pub use super::vendor::Entity as Vendor;