Hi Thirumal,
As mentioned by Bruno, when you create a form with Form Builder, nothing gets generated in the apps directory. The form definition is stored in "your" database, just like data that will be captured by the form at runtime. By default, Orbeon Forms ships with eXist-db, which makes it faster to get started. In production however, we recommend that you either setup Orbeon Forms to store data in an external database, whether it is an external eXist-db, or a relational database. Does this make sense?
Alex
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