servicestack - Duplicate identical fields between ServiceStack's UserOAuthProvider and UserAuth tables

Question

Is there a particular reason why these fields are duplicated with the same data across the UserOAuthProvider and UserAuth tables?

UserName: someusername,
Email: "someusername@somedomain.com",
PrimaryEmail: "",
FirstName: null,
LastName: null,
DisplayName: "",
BirthDate: null,
BirthDateRaw: null,
Country: null,
Culture: "en",
FullName: "",
Gender: null,
Language: null,
MailAddress: "",
Nickname: null,
PostalCode: null,
TimeZone: null, 

Answer 1

该UserAuth表是保存用户主数据的父记录，每次用户向外部提供者进行身份验证时都会合并这些主数据，而这些UserOAuthProvider表保存有关用户的信息，这些信息是在用户登录后为单个身份验证提供者收集的。