Symbolic Representations

Scope

Objects can be concrete or symbolic, systems are designed to process their symbolic reprsentations.

Actual objects and symbolic representation

Objective

Business objects and activities are represented by symbolic objects, persistent or transient; those symbolic representations must be physically implemented and duly identified as persistency or execution units if they are to be processed.

Representations can be concrete, symbolic, or both.

Since persistent representations must be consistently and continuously mapped to their actual counterparts across activities, some mapping mechanism has to be introduced. A naive solution would use some part as a proxy to represent the whole. Yet, whereas the mapping could be enforced, the representations could not be processed independently of their actual counterparts.

When used as proxies objects could be found “actually” missing

A somewhat better solution could be to use look-alikes built on purpose, and to select a supposedly unique feature to identify both object and representation.

Look-alike built on purpose, together with added feature for identification.

If unicity could not be guaranteed for actual features, one could design a symbolic one and attribute it to both actual objects and representations.

Transient Symbolic Representations

The problem for transient representations is somewhat different since they are only to be matched while activities are executed.

Activities use templates to process persistent representations.

On the other hand, instructions as how to create, process, or delete objects must be kept at hand, and that is the rationale behind types and models.

Models are needed to describe how contexts should be consistently mapped into symbolic representations, more precisely they will define:

  • Primary objects with individual persistent identity, to be mapped directly to their representation.
  • Dependent objects, whose mapping is done through primary ones.
  • Subsets of objects associated with the same features.
  • Primary activities with individual identity, whose context has to be consistently represented until completion.
  • Dependent activities, whose context is managed by primary ones.
  • Subsets of activities associated with the same features.
  • Actual and symbolic connectors, persistent and transient.

Types are description templates for actual objects or behaviours


2 Responses to “Symbolic Representations”

  1. best Says:

    the only problem on your website is there is no posted date !!!

    • caminao Says:

      That’s deliberate, the objective being to constitute a comprehensive and consistent reference of the proposed approach.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


Follow

Get every new post delivered to your Inbox.

Join 296 other followers

%d bloggers like this: