Built entities not reflected in DB

I was trying to make some custom-built records (built using Application Designer) available in our PeopleSoft Campus Solutions instance, whose database server runs Oracle DB 11gR2.

Here's our organization's problem: after we built the relevant entities (i.e. some tables, indexes and views), those entities are NOT showing up at all when queried by our DBAs, even under the SYSADM user, where they are supposed to appear under. We needed a table that I built under the relevant record of the same name to initialize the component the table was under, but then we could not find the table in our DB, and because of this issue, it became a critical showstopper to implementation.