@startuml


entity "timbang"{
  * id : number <<generated>>
  * admin_id : number <<FK>>
  petani_id : number <<FK>>
  kendaraan : text
  waktu : timestamp
}

entity "berat"{
  * id : number <<generated>>
  * penimbang_id : number <<FK>>
  * pemilah_id : number <<FK>>
  timbang_id : number <<FK>>
  waktu : timestamp
  kualitas : enum (1,2,sortiran, kendaraan)
  berat : number
}

entity harga_beli {
  * id
  tanggal : date
  created_by : number <<FK>>
  harga_kw1 : number
  harga_kaw2 : number
  harga_kaw3 : number
}

entity "harga_jual"{
  * id : number <<generated>>
  * admin_id : number <<FK>>
  harga : number
  tanggal : date
}

entity "petani"{
  * id : number <<generated>>
  nama : text
  alamat : text

}

entity "user"{
  * id : number <<generated>>
  username : text
  password : text
  nama : text
}

entity "role" {
  * id : number <<generated>>
  name : text
}

entity user_role {
  * id : number <<generated>>
  user_id : number <<FK>>
  role_id : number <<FK>>
}

entity "authority" {
  * authority : text
  name : text
}

entity "role_authority" {
  * id : number <<generated>>
  role_id : number <<FK>>
  authority : text <<FK>>
}

user::id ||..o{ user_role::user_id
user_role::role_id }o..|| role::id
role::id ||..o{ role_authority::role_id
role_authority::authority }o..|| authority::authority

user::id ||..|{ timbang::admin_id
timbang::petani_id }o..|| petani::id
timbang::id ||..o{ berat::timbang_id

berat::penimbang_id }o..|| user::id
berat::pemilah_id }o..|| user::id

harga_beli::created_by }o..|| user::id


@enduml