How to insert a link to a document from another 1C database?

Question

1C

There is a need in the item of the reference book Nomenclature of one base 8.3 to indicate a link to some element of the reference book Nomenclature from another base. How can this be implemented? COM connection or HTTP, I can take a selection from the directory of another database, but ...
1. How to insert this selection into the selection form? By pressing the selection button on the element form, it is necessary that the form of the item list from another database opens.
2. How to store the selected link so that the link is stored in the document, but for example the name is displayed?
Please tell me which way to dig.

Answer 1

If there is a task to store a link to an object from another database and at the same time display it on the forms according to the views, then I would take the path of creating an additional reference for external data . Make the name identical to the one in the external database and it will also be a representation. Then save the connection path to another database, the type of metadata and the GUID from the link - using the last two entities, you can get a link to the element on the other side during a COM connection. When selecting an element on other forms, you can first, by applying a metadata filter, select the elements of the desired type already saved in the first database and add the ability to request an already complete selection in the external database.