1. A system comprising: at least one programmable processor associated with an application server; and a machine-readable medium storing instructions that, when executed by the at least one processor, cause the at least one programmable processor to perform operations comprising: generating an instance of an application function; generating an executor for the application function; requesting an instance of a component class of the application function from a package manager of a database system; accessing a void pointer associated with the instance of the component class, and a wrapper function address associated with the application function, the void pointer and wrapper function address comprising runtime parameters of the application function the accessing comprising: defining an interface to an interface registry stored in a component instance manager; receiving the interface to the interface registry; and adding the void pointer to the interface registry via the interface; and executing the application function by the executor according to the runtime parameters.