Tactical Modeling
We model tactically inside a Bounded Context using DDD’s building block patterns. One of the most important patterns of tactical design is Aggregate (10), as illustrated in Figure G.4.
Figure G.4. Two Aggregate types with their own transactional consistency boundaries
An Aggregate is composed of either a single Entity (5) or a cluster of Entities and Value Objects (6) that must remain transactionally consistent throughout the Aggregate’s lifetime. Understanding how to effectively model Aggregates is quite important and one of the least well understood techniques among DDD’s building blocks. If they are so important, you may ...
Get Implementing Domain-Driven Design now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
