Chapter 1, The Sample Application

1. Understanding the business perspective helps to tie real-world situations to conceptual designs as well as understand how behaviors of business objects can impact the need for resilient, scalable services to support them.
2. It’s possible to theorize that there is a use case for a WorkOrders domain; however, the concept of WorkOrder may be better served as a supporting entity within the Maintenance domain.
3. Every effort was taken to ensure no erroneous or excess information was included in the aggregates. Personal preference or strict adherence to prescriptive DDD patterns may cause that to shift.
4. A traditional “relational” database tends to allow all forms of data manipulation, from inserts to updates to deletes while also structuring the data. NoSQL options allow for unstructured, heterogeneous data to be stored in the same logical data store. Using event sourcing strongly encourages the use of an append-only transaction...