@startuml
'http://plantuml.com/class-diagram




class LjUser{
    ..数据字段..
    stuno:string
    gender:string
    skills:Array
    name:string
    signDate:Date
    account:string
    password:string
    age:Number
    ..关联字段..
    member:string
}

class LjCompany{
    comno:string
    post:string
    salary:string
    name:string
    info:string
    address:string
    ..关联字段..
    member:string
}

class LjInstitution
{
    name:string
    courses:string
    price:string
    address:string
    info:string
    phoneNumber:string
    ..关联字段..
    member:string
}

class LjMember{
    level:string
    member:string
}


@enduml