Let's assume that we have to develop an enterprise system for a company. If applied to local systems, it's just over-designing a simple feature. It's meant to be used in remote calls to promote security and loose coupling. What's worth noting is that applying the Data Transfer Object pattern can become an anti-pattern in local systems. Nowadays, we use mappers for that purpose. Martin Fowler also defines an assembler object, used to convert data between the DTO and any entity objects. There, the main idea of DTOs is to reduce the number of remote calls that are expensive. Martin Fowler describes the Data Transfer Object in his famous book Patterns of Enterprise Application Architecture. When implemented, DTOs become the means of data transport between systems. They can hold data from single or multiple sources as well. It should not contain any business logic but should contain serialization and deserialization mechanisms.ĭTOs can either contain all the data from a source, or partial data. A Data Transfer Object is, essentially, like a data structure. The Data Transfer Object Design Pattern is one of the enterprise application architecture patterns that calls for the use of objects that aggregate and encapsulate data for transfer. Avoiding tight coupling and ensuring data integrity/security mustn't be an afterthought when working on these applications. They cultivate architectural thinking and help developers be more confident in building systems with proven reliability.Įnterprise applications can be charged with manipulating, displaying or storing huge amounts of data. Enterprise software can deal with a lot of complex data and it's important for this type of software to have good architecture.Įnterprise application architecture patterns are standardized solutions to common problems found in large systems. It's oftentimes a large-scale, multi-tiered, scalable system. An enterprise application is a software solution created for the needs of an organization.
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