diff --git a/internal/class/model/class.go b/internal/class/model/class.go
new file mode 100644
index 0000000..21bd426
--- /dev/null
+++ b/internal/class/model/class.go
@@ -0,0 +1,22 @@
+package classmodel
+
+import (
+	"github.com/EngineerProOrg/BE-K01/internal/room/model"
+	"github.com/EngineerProOrg/BE-K01/internal/course/model"
+	"github.com/EngineerProOrg/BE-K01/internal/professor/model"
+)
+
+type Class struct {
+	Class_id int `json:"class_id" gorm:"column:CLASS_ID;primaryKey"`
+	Class_name string `json:"class_name" gorm:"column:CLASS_NAME"`
+	Prof_id int `json:"prof_id" gorm:"column:PROF_ID"`
+	Prof professormodel.Professor `json:"prof" gorm:"preload:false"`
+	Course_id int `json:"course_id" gorm:"column:COURSE_ID"`
+	Course coursemodel.Course `json:"course" gorm:"preload:false"`
+	Room_id int `json:"room_id" gorm:"column:ROOM_ID"`
+	Room roommodel.Room `json:"room" gorm:"preload:false"`
+}
+
+func (Class) TableName() string {
+	return "CLASS"
+}
\ No newline at end of file
diff --git a/internal/course/model/course.go b/internal/course/model/course.go
new file mode 100644
index 0000000..215618e
--- /dev/null
+++ b/internal/course/model/course.go
@@ -0,0 +1,16 @@
+// create table COURSE (
+//     COURSE_ID int primary key,
+//     COURSE_NAME varchar(255)
+// )
+
+
+package coursemodel
+
+type Course struct {
+	Course_id int `json:"course_id" gorm:"column:COURSE_ID;primaryKey"`
+	Course_name string `json:"course_name" gorm:"column:COURSE_NAME"`
+}
+
+func (Course) TableName() string {
+	return "COURSE"
+}
\ No newline at end of file
diff --git a/internal/enroll/model/enroll.go b/internal/enroll/model/enroll.go
new file mode 100644
index 0000000..0a8db57
--- /dev/null
+++ b/internal/enroll/model/enroll.go
@@ -0,0 +1,27 @@
+package enrollmodel
+
+import (
+	"github.com/EngineerProOrg/BE-K01/internal/class/model"
+	"github.com/EngineerProOrg/BE-K01/internal/student/model"
+)
+
+// create table ENROLL(
+//     STUD_ID int,
+//     CLASS_ID int,
+//     GRADE varchar(3),
+//     foreign key (STUD_ID) references STUDENT(STUD_ID),
+//     foreign key (CLASS_ID) references CLASS(CLASS_ID),
+//     PRIMARY KEY (STUD_ID, CLASS_ID)
+// )
+
+type Enroll struct {
+	Stud_id int `json:"stud_id" gorm:"column:STUD_ID;primaryKey"`
+	Stud studentmodel.Student `json:"stud" gorm:"preload:false"`
+	Class_id int `json:"class_id" gorm:"column:CLASS_ID;primaryKey"`
+	Class classmodel.Class `json:"class" gorm:"preload:false"`
+	Grade string `json:"grade" gorm:"column:GRADE"`
+}
+
+func (Enroll) TableName() string {
+	return "ENROLL"
+}
\ No newline at end of file
diff --git a/internal/professor/model/professor.go b/internal/professor/model/professor.go
new file mode 100644
index 0000000..8d8753d
--- /dev/null
+++ b/internal/professor/model/professor.go
@@ -0,0 +1,11 @@
+package professormodel
+
+type Professor struct {
+	Prof_id int `json:"prof_id" gorm:"column:PROF_ID;primaryKey"` 
+	Prof_lname string `json:"prof_name" gorm:"column:PROF_NAME"`
+	Prof_fname string `json:"prof_fname" gorm:"column:PROF_FNAME"`
+}
+
+func (Professor) TableName() string { 
+	return "PROFESSOR"
+}
\ No newline at end of file
diff --git a/internal/room/model/room.go b/internal/room/model/room.go
new file mode 100644
index 0000000..31200c0
--- /dev/null
+++ b/internal/room/model/room.go
@@ -0,0 +1,19 @@
+package roommodel
+
+
+// create table ROOM (
+//     ROOM_ID int primary key,
+//     ROOM_LOC varchar(50),
+//     ROOM_CAP varchar(50),
+//     CLASS_ID int
+// )
+type Room struct {
+	Room_id int `json:"room_id" gorm:"column:ROOM_ID;primaryKey"`
+	Room_loc string `json:"room_loc" gorm:"column:ROOM_LOC"`
+	Room_cap string `json:"room_cap" gorm:"column:ROOM_CAP"`
+	Class_id int `json:"class_id" gorm:"column:CLASS_ID"`
+}
+
+func (Room) TableName() string {
+	return "ROOM"
+}
\ No newline at end of file
diff --git a/internal/student/model/student.go b/internal/student/model/student.go
new file mode 100644
index 0000000..00c1c50
--- /dev/null
+++ b/internal/student/model/student.go
@@ -0,0 +1,23 @@
+// create table STUDENT (
+//     STUD_ID int primary key,
+//     STUD_LNAME varchar(50),
+//     STUD_FNAME varchar(50),
+//     STUD_STREET varchar(255),
+//     STUD_CITY varchar(50),
+//     STUD_ZIP varchar(10)
+// )
+
+package studentmodel
+
+type Student struct { 
+	Stud_id int `json:"stud_id" gorm:"column:STUD_ID;primaryKey"`
+	Stud_lname string `json:"stud_lname" gorm:"column:STUD_LNAME"`
+	Stud_fname string `json:"stud_fname" gorm:"column:STUD_FNAME"`
+	Stud_street string `json:"stud_street" gorm:"column:STUD_STREET"`
+	Stud_city string `json:"stud_city" gorm:"column:STUD_CITY"`
+	Stud_zip string `json:"stud_zip" gorm:"column:STUD_ZIP"`
+}
+
+func (Student) TableName() string {
+	return "STUDENT"
+}
\ No newline at end of file