Describe path syntax for edm:Annotations/@Target

External targeting is only possible for EDM elements that are uniquely identified by a name within their parent, and all their *(grand)parent elements are uniquely identified by a name within their parent. This excludes edmx:Reference because it is not an EDM element, and externally annotating a reference seems odd anyway. This excludes Action, Function, Parameter, and ReturnType because action and function overloads are indistinguishable by name. This also excludes OnDelete, ReferentialConstraint, NavigationPropertyBinding, and all constant and dynamic annotation expressions because they are unnamed. QualifiedName of schema child, optionally followed by a slash and name of nested element: Examples: Schema.Type Schema.EntityType/Property Schema.ComplexType/NavigationProperty Schema.EnumType/Member Schema.EntityContainer Schema.EntityContainer/EntitySet

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