@startuml
skinparam monochrome true
skinparam packageStyle rectangle
skinparam shadowing false

skinparam classAttributeIconSize 0

hide circle
hide methods

class Organization {
    name
    phoneNumber
    email
    address
}

class HRM {
    name
    birthdate
    gender
    address
    email
    phoneNumber
    idDocumentNumber
    admissionDate
    organizationID
}

class Skill {
    name
}

Organization "1" -- "*" Skill : has >
HRM "1" -left- "1..*" Skill : registers >

@enduml