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The ENVRI RM IV defines IV Information Objects#datastate and IV Information Objects#metadatastate data state and metadata state as the set of attributes which determine the actions that can be performed over a given information object.

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The diagram below shows the states of three IV objects (Measurement Result, Persistent Data and Metadata) and their relationships.

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borderColor black borderWidth 1 borderStyle solid title IV State Diagrams
Image Modified Notation of Information Viewpoint Models#notation_iv_states   Notation

This diagram shows all the possible states for each of the IV Objects.

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In the diagram the filled circle indicates a starting point or a junction. Used as starting point, a filled circle indicates a pseudo-state which represents the start of the lifetime of an object instance. Used as a junction, the filled circle indicates a pseudo-state where paths merge or split. The Rectangles with a label in the upper left corner are used to indicate the object whose states are represented. The rectangles with rounded corners are used to indicate states. Each arrow indicates a transition between states. The label of the arrow indicates the activity that triggers the transition. The bar figure in the diagram indicates a pseudo-state that can represent a fork or a merge of paths. The type of diagram presented is an UML state machine diagram [ Bibliography#ref4040].

Simple use example

The diagram shows the series of actions applied change the state of the IV object until it reaches a "published" state. In this diagram, only the persistent data object is shown. The diagram is linear and depicts contains only a subset of the allowed states and actions. This subset can vary from one RI to another. RIs can model their data lifecycles using state machine diagrams. The states described in the IV States diagram indicate a set of possible paths to follow when representing the data lifecycle. The instances developed by RIs may chose the states they need to include to represent their corresponding data lifecycles. RIs can also include additional states which help them better represent their data processing flows.

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borderColor	black
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solid title IV State Diagrams Diagram - Simple use example
Image Modified Notation of Information Viewpoint Models#notation_iv_states

Advanced use example

The diagram shows the lifecycles of five IV objects and the way in which they relate to each other. The example is more complex but it is still linear and easy to follow.

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In this example, most of the states and actions are still subsets from the ones originally introduced on he IV State Diagram. The only exception is the backedup state. This is still valid, RIs can adapt the diagrams to their particular needs adding states and actions to better illustrate their data lifecycles as close to reality as possible.