For an asset with a large amount of depdendencies, .e.g.

D depends on C, C on A + B

When I want to convert the asset to a job in order to define a schedule for it, shall I put all A+B+C+D to

define_asset_job

?

If you want to ensure that A, B, C, and D are all materialized when the schedule ticks, then yes you should put all of them in the asset job. If you just want to materialize D with whatever the most recent values of A, B and C are, then you would just put D in the job