11.1 Overview [Dido Solutions, Inc Wiki]

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====== 11.1 Overview ======
[[fxdemo:03-part:11-fx-transaction-and-contract-lifecycle-model:start | Go To FX Transaction and Contract Lifecycle Model ]]

The FX Transaction and Contract Lifecycle Model defines the FX-specific lifecycle states and state-transition responsibilities used by the FX Demo Logical Profile.

This model distinguishes candidate transaction information, validated transaction information, semantically interpreted transaction information, [[dido:99_annexes:annex-b-terms-and-definitions:f:fx_contract_state|FX Contract State]], computed [[dido:99_annexes:annex-b-terms-and-definitions:f:fx_cash-flow_obligation|FX Cash-Flow Obligation]]s, [[dido:99_annexes:annex-b-terms-and-definitions:f:fx_policy_decision|FX Policy Decision]] state, and audit/provenance records. It preserves the difference between a transaction input, a validation outcome, an interpreted contract, a contract lifecycle state, a computed obligation, and a release decision.

The FX Transaction and Contract Lifecycle Model remains platform-independent. It does not prescribe a state-machine implementation, workflow engine, database status field, event store, rules engine, orchestration mechanism, API, [[dido:99_annexes:annex-b-terms-and-definitions:d:dds|DDS]] topic, [[dido:99_annexes:annex-b-terms-and-definitions:r:rest|REST]] resource, or runtime persistence mechanism. Implementation profiles select those realization mechanisms.

Figure 11-1 summarises the logical lifecycle progression used by the FX Demo Logical Profile.

<code>
FX Transaction Candidate
└── Validated FX Transaction
    └── Semantically Interpreted FX Transaction
        └── FX Contract State
            └── FX Cash-Flow Obligation
                └── FX Policy Decision
                    └── FX Release Package
</code>

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**Figure 11-1:** FX logical lifecycle progression from transaction candidate to release package.
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