ERD in plantuml

erd.md

entity	entity
1	-
0 or 1	-o|
one and only 1	-||
many	-{
0 or many	-o{
1 or many	-|{

erd.puml

@startuml

entity member {
  *member_id: bigint(20)
  name: varchar(40)
  city: varchar(40)
  street: varchar(100)
  zipcode: varchar(5)
}

'order 는 예약어
entity orders {
  *order_id: bigint(20)
  member_id: bigint(20)
  placed_at: timestamp(3)
  status: tinyint(4)
}

entity order_item {
  *order_item_id: bigint(20)
  order_id: bigint(20)
  item_id: bigint(20)
  sub_total: decimal(10, 2)
  quantity: int(10)
}

entity item {
  *item_id: bitint(20)
  name: varchar(100)
  price: decimal(9, 2)
  stock: unsigned int(10)
}

entity category {
  *category_id: bigint(20)
  parent_id: bigint(20)
  name: varchar(40)
}

entity category_item {
  *category_id: bigint(20)
  item_id: bigint(20)
}

entity delivery {
  *delivery_id: bigint(20)
  city: varchar(40)
  street: varchar(100)
  zipcode: varchar(5)
  status: tinyint(4)
}

member ||--o{ orders
orders ||-o{ order_item
order_item }o-|| item
orders ||--|| delivery
category ||--o{ category_item
category_item }o--|| item

@enduml

@startuml

entity member {
*member_id: bigint(20)
name: varchar(40)
city: varchar(40)
street: varchar(100)
zipcode: varchar(5)
}

'order 는 예약어
entity orders {
*order_id: bigint(20)
member_id: bigint(20)
placed_at: timestamp(3)
status: tinyint(4)
}

entity order_item {
*order_item_id: bigint(20)
order_id: bigint(20)
item_id: bigint(20)
sub_total: decimal(10, 2)
quantity: int(10)
}

entity item {
*item_id: bitint(20)
name: varchar(100)
price: decimal(9, 2)
stock: unsigned int(10)
}

entity category {
*category_id: bigint(20)
parent_id: bigint(20)
name: varchar(40)
}

entity category_item {
*category_id: bigint(20)
item_id: bigint(20)
}

entity delivery {
*delivery_id: bigint(20)
city: varchar(40)
street: varchar(100)
zipcode: varchar(5)
status: tinyint(4)
}

member ||--o{ orders
orders ||-o{ order_item
order_item }o-|| item
orders ||--|| delivery
category ||--o{ category_item
category_item }o--|| item

@enduml

@startuml

entity Admin {
AdminID : int
Username : string
Password : string
Email : string
Role : string
}

entity Article {
ArticleID : int
Title : string
Content : string
CreatedDate : datetime
ModifiedDate : datetime
Status : string
Category : Category
}

entity Category {
CategoryID : int
Name : string
Description : string
}

entity Comment {
CommentID : int
Article : Article
User : User
CommentText : string
CreatedDate : datetime
}

entity User {
UserID : int
Username : string
Email : string
Password : string
Role : string
}

entity Tag {
TagID : int
Name : string
Description : string
}

Article -- "1" Category
Article "0.." -- "0.." Comment
Comment "1" -- "1" User
User "0.." -- "0.." Comment
Article "0.." -- "0.." Tag
Tag "0.." -- "0.." Article

@enduml