界面如下：
Basically, contact data for SAP Hybris Marketing can be loaded from various sources, such as an ERP system, a web shop, social media and many more.
Contact資料源可以來自各個管道，例如ERP系統，電商，社交媒體賬号等等。
每個管道都可以成為Marketing Cloud系統裡最終完整contact執行個體的一塊拼圖，這個完整的contact執行個體也稱為Golden record。
Each source may contribute to the building of the Golden Record, which represents the most valuable contact master data stored in one single record per contact.
而資料源管道自身也被稱為Main facets，用于提供正常意義上的contact資訊，以及額外資訊，例如位址資訊，電子郵箱位址，信用卡号，手機号等等。這些額外資訊也稱為additional facet。
Therefore, the sources themselves are considered as Main Facets, which might provide general contact data, such as address data or data for customer-specific fields. A Main Facet might also have data, for example, a loyalty card number, an email address, a phone, a mobile or a fax number. Because of their identifyingnature, we consider these attributes as Additional Facets.
上圖中的藍色圓環代表main facets，而黃色圓環代表additional facets。
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