MongoDB (source ETL/ELT)

(1) The MongoDB alias.

(2) The operation to be performed.

(3) The collection to which the query refers (similar to a table in an SQL database).

(4) Opens the wizard, see (5) to create the query (6).

(5) The wizard for creating the query.

(6) The query. The found documents are the 'rows'.

(7) Testing the query (6).