QCE Digital Solutions Practice Questions

Resident and process 1 Validate report. Resident is the source of the data the system works on: it sends report details and a photo into process 1. Process 1 transforms that input (checking location, required fields and image format) and sends a reference number back to Resident, so the relationship is a two-way request/reply between an external entity and a process.

Resident and data store D1 Reports. Resident has no direct flow to D1. Under Gane–Sarson rules an entity cannot write to a store directly; data must be processed first. The resident's report reaches D1 only as the validated report output of process 1, which protects the integrity of stored data because unchecked input is never stored.

Resident and process 2 Assign job. Resident is indirectly related to process 2: process 2 reads the open reports that originated with residents from D1. Resident never communicates with process 2, which keeps crew scheduling inside the system.

Resident and data store D2 Crew roster. There is no relationship. D2 is read only by process 2; residents have no need to see crew rosters, so leaving them unlinked also limits exposure of staff information.

Marking focus: one mark for each correctly explained relationship (including the two indirect or absent ones) plus marks for using correct DFD terminology (entity, process, store, flow) and the rule that entities exchange data with stores only via processes.