Database Reference

Customer Documents stores each document once and controls who can see it through separate assignments. The same document can therefore be shared by customer, group or product context without duplicating the file.

Visibility and context

Relationship	Why it matters
`customer_document` belongs to one `store_website`	Defines the website in which the document is available.
`customer_document_customer` assigns a document to one `customer_entity`	Provides private documents to specific customer accounts.
`customer_document_customer_group` assigns a document to one `customer_group`	Shares documents with every customer in a selected group.
`customer_document_product` assigns a document to one `catalog_product_entity`	Shows product-related files in the appropriate product or account context.
`customer_document_product` belongs to one `store`	Allows product-document visibility to differ by Store View.

Delivery and reporting

Relationship	Why it matters
`customer_document_link` belongs to one `customer_document`	Adds a managed external link alongside uploaded document files.
`customer_document_email_notification` links one `customer_document` with one `customer_entity`	Tracks customer-specific document notifications.
`customer_document_download_report` belongs to one `customer_document`	Supports download reporting for each document.
`customer_document_tag_document` links one `customer_document` with one `customer_document_tag`	Groups and filters documents without changing their assignments.

File contents, storage details and internal columns are intentionally omitted. Use the module interfaces when assigning or replacing documents.