Oracle E- Business Suite consists of Oracle Financials, Oracle HRMS, and Oracle CRM.
The underlying technologies that they use are:
Oracle Software Configuration Manager
Oracle Business Intelligence Beans
However, PeopleSoft have their own technology platform called PeopleCode.
PeopleCode is an (ool) object-oriented proprietary (case-insensitive) language used to express business logic for PeopleSoft applications.
Retek also must have it's own technology stack different from Oracle's Pl/Sql, Forms, Reports, Oracle Database.
How does Oracle plan to combine all these different technologies into it's own technology: Oracle Pl/Sql, Oracle Database etc. So that Oracle practitioners can work on one technology stack and build applications on PeopelSoft, Retek and Oracle E- Business Suite.