UML Association: Are "navigableOwnedEnd" and "ownedEnd" the same?
Please refer to the following diagram which is shown in the UML 2.5.1 specification at section 11.5.2 on page 241 of the PDF file:
What is the difference here? navigableOwnedEnd subsets ownedEnd, and due to the dot notation, both are navigable by default. The descriptions on page 261 are basically the same.
These are two different concepts, as UML specs state page 202:
Aggregation type, navigability, and end ownership are separate concepts, each with their own explicit notation.
End ownership is a structural characteristic whereas navigability is a runtime promise. See this OMG article for an in-depth analysis.
While navigability is assumed with the dot notation, UML specs explicitly allow for a combination of navigability and dot notation, page 202:
The dot may be used in combination with the other graphic line-path notations for Properties of Associations and Association ends. These include aggregation type and navigability.
- OCL implementation of UML operation "Classifier::directlyUsedInterfaces()"
- Is it valid to call std::destroy_at on a unconstructed object?
- Is it mandatory to infer the type of the default template argument on each instantiation?
- Is it safe to use `vec.push_back(vec.back());`?
- Overload resolution for implicit conversion operators used in aggregate Initialization
- Why does specialization of a static variable template result in multiple definition error?
- Is it guaranteed that outer checked/unchecked context influences the behavior of lambdas created inside it?
- OCL keyword 'self' and UML Classifier::inheritedMember()
- no match for 'operator==' in GCC 12
- Why "Each constant expression shall evaluate to..." instead of "Each evaluated constant expression shall evaluate to..."?
- Why are stderr, stdin, stdout defined as macros?
- XML Schema with extension of a mixed element
- If there is [[noreturn]], then why there is no [[always_return]]?
- UML StringExpressions, Operands and SubExpressions
- UML ConnectorEnd and constraint 'role_and_part_with_port'
- UML Ports and Interfaces
- Have anonymous structs and unions in C11 been incorrectly described?
- Since a string literal is considered an lvalue, why must the binding lvalue reference be const?
- UML Class::nestedClassifier and Classifier::nestingClass
- memset_s(): What does the standard mean with this piece of text?
- GCC and MSVC accept "alignas" whereas Clang rejects it
- Comparison operator with explicit object parameter of not class type
- Using std::tie as a range for loop target
- tool do determine the value category an expression: understanding the result when using references
- C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ programming?
- Is `extern` required to make an inline function definition externally linked?
- Does Promise.resolve(1); involve microtask queue?
- int a[] = {1,2,}; Why is a trailing comma in an initializer-list allowed?
- Making `std::get` play nice with SFINAE
- What does the standard say about how calling clear on a vector changes the capacity?