I do similar, but frame it in terms of dependencies.
replyThe database can live without the web server, but the web server doesn't work without the database.
Therefore webserver ---> database.
Key thing in that these deployment / context / container diagrams don't have a temporal axis. If you want to represent a flow, then you want a diagram where time has directionality, like a sequence diagram.
yup, A interacts with B with the interaction originating from A.
replyrelated tangent
(outside of diagrams)
lt < and gt > symbols are often dangerously ambiguous; does
reply A > B > C