@Entity(tableName = "student")
data class StudentEntity(@PrimaryKey(autoGenerate = true) var id: Int? = null,
                         @ColumnInfo(name = "student_code") var code: Long? = null,
                         @ColumnInfo(name = "first_name") var firstName: String? = null,
                         @ColumnInfo(name = "last_name") var lastName: String? = null,
                         var email: String? = null,
                         var gender: String? = null,
                         var age: Int? = 0,
                         var address: String? = null)