April 2009
Model
A system of abstractions that describes selected aspects of a domain and can be used to solve problems related to that domain.
- 1256 reads
Life Cycle
A sequence of states an object can take on between creation and deletion, typically with constraints to ensure integrity when changing from one state to another. May include migration of an Entity between systems and different Bounded Contexts.
- 1229 reads
Layered Architecture
Excerpted from Domain-Driven Design Book
Definition: A technique for separating the concerns of a software system, isolating a domain layer, among other things.
Problem: In an object-oriented program, UI, database, and other support code often gets written directly into the business objects. Additional business logic is embedded in the behavior of UI widgets and database scripts. This happens because it is the easiest way to make things work, in the short run.
Definition: A technique for separating the concerns of a software system, isolating a domain layer, among other things.
Problem: In an object-oriented program, UI, database, and other support code often gets written directly into the business objects. Additional business logic is embedded in the behavior of UI widgets and database scripts. This happens because it is the easiest way to make things work, in the short run.
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- 2138 reads
Large-Scale Structure
A set of high-level concepts, rules, or both that establishes a pattern of design for an entire system. A language that allows the system to be discussed and understood in broad strokes.
- 1256 reads
Iteration
A process in which a program is repeatedly improved in small steps. Also, one of those steps.
- 1225 reads
Assertion
A statement of the correct state of a program at some point,
independent of how it does it. Typically, an ASSERTION specifies the
result of an operation or an invariant of a design element.
- 1293 reads
Intention-Revealing Interface
Excerpted from Domain-Driven Design Book
Definition: A design in which the names of classes, methods, and other elements convey both the original developer's purpose in creating them and their value to a client developer.
Definition: A design in which the names of classes, methods, and other elements convey both the original developer's purpose in creating them and their value to a client developer.
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- 1852 reads
Immutable
The property of never changing observable state after creation. implicit concept A concept that is necessary to understand the meaning of a model or design but is never mentioned.
See also: Value Object
See also: Value Object
- 1338 reads
Function
An operation that computes and returns a result without observable side effects.
- 1170 reads