5.2The four objects you should know

Account

Usually represents a:

company
organization
business customer

Typical fields:

Id
Name
Phone
Website
Industry
BillingCity
BillingState

Example:

Account
--------------------------------
Id:       001ABC...
Name:     Acme Corporation
Industry: Manufacturing

---

Contact

Usually represents a person associated with an Account.

Contact
--------------------------------
Id
FirstName
LastName
Email
Phone
AccountId

Example:

Contact

John Smith
    │
    │ AccountId
    ↓
Acme Corporation

The critical relationship:

Contact.AccountId
      ↓
Account.Id