Documenting "virtual" implicit entities

Piotr Kononow - Dataedo Team Piotr Kononow 22nd April, 2021

Some data models have a "missing" implicit entities modeled just as a value/code in columns of existing tables. To explain it let's have a look at the tables below. They use document_type column, represent type of the document represented by the code, but document type table is nowhere to be found.

In such case, to document this entity and the relationships using a manual table that would represent that entity and then define relationships between the real and manual tables.

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