The P-Structure. This is a logical view of the contents of a provenance store. The P-Structure contains a set of interaction records that document interactions between actors. Author: Paul Groth Last Modified: 28 Feb 2006 Copyright (c) 2006 University of Southampton See pasoalicense.txt for license information. http://www.opensource.org/licenses/mit-license.php (Root Element Start Here) An instance of the p-structure. Each instance of the p-structure contains a set of interaction records. An interaction record describes the client and service view of a particular interaction. An interaction record is identified by an interaction key. An interaction key contains a message source, a message sink, and an interaction id. The source of the message within the sender. The sink of the message within the receiver. A URI that uniquely identifies this interaction . Each view (either client or service) comes from a particular actor. The actor that asserts p-assertion in a particular view is termed the asserter. The identity of the asserter is documented in the corresponding view inside the interaction record. Assertion as to the content of an interaction. Information supplied by an actor about its state in the context of this interaction . Examples include the script that was used in running a service or the time when an invocation was sent/received. Describes a relationship between a p-assertion recorded in this view and another p-assertion made by the asserting actor. This can be seen as a triple: subject identifier, relation, object identifier. The number of expected p-assertions to be contained within a view as documented by the asserting actor. A link between this provenance store and another provenance store. Where the provenance store linked to will contain the other view of the interaction record. Whether a view is from the sender or receiver. Uniquely identifies a p-assertion within a view. An application dependent mechanism for referencing a piece of data within a p-assertion. The parameter name of a data item referenced in a relationship p-assertion. The style of documentation used when recording an interaction p-assertion. The senders's view of the interaction . The receiver's view of the interaction . The actual link to the PS.