# OpenGTM records OpenGTM maintains a shared company and people warehouse. Workbooks research and enrich those records; audiences select them for monitoring and activation. ## Language **Company**: An organization with an identity and accepted company facts, whether or not any people have been discovered. _Avoid_: Lead when referring to an organization. **Person**: An individual with an identity and accepted personal facts that survive changes of employer. _Avoid_: Contact when that would imply identity belongs to one company. **Employment**: A time-bounded role belonging to a Person, linked to a Company when the employer is known. Multiple observations and previous roles remain part of its history. **Accepted fact**: The current value of a field owned by a Company, Person, or Employment. A manually accepted value takes precedence over an unreviewed imported or provider value. **Observation**: A source's assertion about a fact, including when and where it was observed. An observation can be retained without replacing an accepted fact. **Workbook row**: A reference to a shared Company or Person, together with local research, formulas, and execution history. Shared facts belong to the referenced record. **Audience**: A saved selection of Companies or People with membership history. Membership refers to the shared record's identity. **Legacy Lead**: A compatibility record from the earlier combined company/contact model. Its identifier remains useful for historical jobs and deliveries; it does not own shared facts. **External identity**: A source-scoped identifier linking an imported row to a Company or Person. A Clay row identifier is unique within its source table, not across a whole workspace. **Migration preview**: A read-only explanation of how imported columns, identities, company relationships, and conflicts will be handled before records are written.