Financial Vertical object - Households

The help file shows:

Household   AccountID     Account

Administering Oracle CRM On Demand > Expression Builder > Expression Builder Functions > JoinFieldValue

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Does this imply that you can use Join Field value on the Househld object to pull information from the Account Object?

If that is true, what is the field called? I cannot see a lookup (read-only picklist) for the Account object in the field setup?

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The ERD document for R23 shows a

M-to-M link betwen Households & Contacts

1-to-M link between Household & Service Request

1-to-M link between Household & Policy

1-to-M link between Household & (Activity,Lead,Opportunity)

1-to-M link between Household & (Financial Account, Financial Plan, Financial Account Holder)