diff --git a/SeaORM/docs/03-generate-entity/02-entity-structure.md b/SeaORM/docs/03-generate-entity/02-entity-structure.md
index cf23ca3169e..dbd33ed13d2 100644
--- a/SeaORM/docs/03-generate-entity/02-entity-structure.md
+++ b/SeaORM/docs/03-generate-entity/02-entity-structure.md
@@ -53,26 +53,26 @@ The column type will be derived automatically with the following mapping:
 
 For the mappings of Rust primitive data types.
 
-| Rust type | Database Type <br/> ([`ColumnType`](https://docs.rs/sea-orm/*/sea_orm/entity/enum.ColumnType.html)) |
-| --------- | ------------- |
-| `String` | Char |
-| `String` | String |
-| `i8` | TinyInteger |
-| `u8` | TinyUnsigned |
-| `i16` | SmallInteger |
-| `u16` | SmallUnsigned |
-| `i32` | Integer |
-| `u32` | Unsigned |
-| `i64` | BigInteger |
-| `u64` | BigUnsigned |
-| `f32` | Float |
-| `f64` | Double |
-| `bool` | Boolean |
-| `Vec<u8>` | Binary |
+| Rust type | Database Type <br/> ([`ColumnType`](https://docs.rs/sea-orm/*/sea_orm/entity/enum.ColumnType.html)) | SQLite <br/> datatype | MySQL <br/> datatype | PostgreSQL <br/> datatype |
+| --------- | --------- | --------- | --------- | --------- |
+| `String` | Char | text | char | char |
+| `String` | String | text | varchar | varchar |
+| `i8` | TinyInteger | integer | tinyint | smallint |
+| `u8` | TinyUnsigned | integer | tinyint | smallint |
+| `i16` | SmallInteger | integer | smallint | smallint |
+| `u16` | SmallUnsigned | integer | smallint | smallint |
+| `i32` | Integer | integer | int | integer |
+| `u32` | Unsigned | integer | int | integer |
+| `i64` | BigInteger | integer | bigint | bigint |
+| `u64` | BigUnsigned | integer | bigint | bigint |
+| `f32` | Float | real | float | real |
+| `f64` | Double | real | double | double precision |
+| `bool` | Boolean | integer | bool | bool |
+| `Vec<u8>` | Binary | blob | blob | bytea |
 
 For the mappings of Rust non-primitive data types. You can check [`entity/prelude.rs`](https://github.com/SeaQL/sea-orm/blob/master/src/entity/prelude.rs) for all of the reexported types.
 
-| Rust type | Database Type <br/> ([`ColumnType`](https://docs.rs/sea-orm/*/sea_orm/entity/enum.ColumnType.html)) | SQLite datatype | MySQL datatype | PostgreSQL datatype
+| Rust type | Database Type <br/> ([`ColumnType`](https://docs.rs/sea-orm/*/sea_orm/entity/enum.ColumnType.html)) | SQLite <br/> datatype | MySQL <br/> datatype | PostgreSQL <br/> datatype |
 | --------- | --------- | --------- | --------- | --------- |
 | `Date`: chrono::NaiveDate <br/>`TimeDate`: time::Date | Date | text | date | date |
 | `Time`: chrono::NaiveTime <br/>`TimeTime`: time::Time | Time | text | time | time |