👐 Add aliases to authors

We want to modify the MongoDB schema so that each author's aliases are represented as an array of strings.

• On the MongoDB diagram view, click the authors collection
• On the relational mappings list on the right, click on the edit icon of author_alias embedded array mapping rule
• In the list of fields, uncheck authorId
• In the mapping rule's advanced settings, Check create array of primitive values
• Click Save and close