101companies

Headline

Model companies

Description

There are the following major kinds of entities involved:

  • Companies
  • Employees
  • Departments
Departments are only involved if and only if sub-feature Feature:Hierarchical company as opposed to sub-feature Feature:Flat company is chosen.

Entities are composed of parts as follows:

  • A company has a name.
  • A company has employees maintained in some sort of collection.
  • A company has (possibly) departments.
  • An employee has a name, a salary and an address.
There are the following additional assumptions:

  • Company names are strings such as "Acme".
  • Employee names are strings such as "Joe".
  • Addresses are strings such as "Redmond".
  • Salaries are non-negative floating point numbers such as "42.42".
  • Employee names are unique across companies.
The following simplifications and omissions are deliberate:

  • In reality, employee names are not necessarily unique.
  • In reality, a company may have a CEO, CFO, etc. omitted here.
  • Salaries may call for a money type also including a currency.

Motivation

This feature triggers use of basic data modeling techniques in implementing the @system. Basic company structure suffices with a tree-like representation of companies.

Illustration

See Feature:Flat company and Feature:Hierarchical company for illustration.

Relationships

Guidelines

This is an abstract (an XOR) feature, which should not be chosen as such, but instead either Feature:Flat company or Feature:Hierarchical company is to be selected.

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