SAP Software Engineer Interview Questions

I would use synchronous calls when the user needs an immediate result and the path is short enough to stay responsive. I would use asynchronous processing when the task is slow, variable, or can be completed later. The best answer shows that the choice depends on latency, reliability, and user experience.

I would keep backward compatibility as long as possible, introduce changes carefully, and give clients a clear migration path. Then I would avoid removing old behavior too quickly. Strong API versioning is about stability and communication.

I would separate the core entities clearly and use relationship tables where many-to-many access is needed. Then I would think about how permissions are inherited or overridden in real use cases. Good data modeling makes authorization easier to reason about.

I would index the columns that are used most often in filters, joins, and sorts, while keeping write cost in mind. Then I would check whether the index actually improves the query plan. Good indexing is guided by workload, not by guesswork.

I would denormalize when the performance benefit or query simplicity is worth the added complexity of keeping data consistent. Then I would make sure the trade-off is intentional and well understood. A strong answer shows that denormalization is a design choice, not a shortcut.