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|Component Title=dataworking4you.com - Knowledge means understanding how parts of things work together
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|align=center|'''SMW explains your business&hellip;<br>&#x25BC;'''
[[File:Lego_as_semantic_web.png|link=]]
|align=center|while your file system merely organizes your files<br>&#x25BC;
[[File:Lego_as_file_system.png|link=]]
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== What does "&hellip;explains your business" mean? ==

When you explain something to someone, you often do it on two levels:

# on a so-called {{mlb|''terminological'' level}} (i.e. on an abstract or general level) and
# on a so-called {{mlg|''assertional instance'' level}} (i.e. on a concrete, factual level).

For example, to a new employee, you explain:

 (1) Job applicants attend several application rounds and they either pass or fail.

You would then reinforce your new employee's fresh understanding by saying:

 (2) For instance, this graduate Joe has passed his first round of application last Friday.

So, you initiate your explanations on the {{mlb|''terminological'' level}} and exemplify them on the {{mlg|''assertional instance'' level}}.

== What does "&hellip;parts of things&hellip;" mean? ==

Now, there are two things to keep in mind here. Firstly, your business might be large and vertically integrated. Secondly, you probably divide your tasks to different roles, who need a thorough understanding of a specific part of your business and can do with general high-level understanding of your overall business.

Hence, in the sense of "divide and conquer", it is appropriate to reduce the view onto your business for a given moment and purpose. This reduced view is what we call a "facet" of your business. As mentioned above, such a facet can be terminological or assertional.

== How do we define a facet? ==

Your business consists of and operates based on "things". Things that 1. can be described and 2. relate to each other in certain ways. Both these descriptions as well as relations are expressed in terms of statements. A statement has a subject, a predicate and an object. Here's an example:

 (3) Graduate Joe has passed first round of application.

This is an ''{{mlg|assertional statement}}'' having:

* "Joe" as its ''subject'',
* "has passed" as its ''predicate'' and
* "first round of application" as its ''object''.

The corresponding ''{{mlb|terminological statement}}'' could be:

 (4) Applicant has passed application round.

So, let's say we want to define two facets:

# the facet "''All graduate applicants that have passed any round of application''" as well as
# the facet "''Any applicants that have passed the <u>first</u> round of application''".

For SMW, we formalize these two facets like this:

# {{code|Is applicant type::Graduate}} and {{code|Has passed::''any''}}
# {{code|Is applicant type::''any''}} and {{code|Has passed::''first round application''}}

Now, let's say you hire an external person temporarily. She can ask your SMW:

 I am a second round examiner for graduate applicants. How do I retrieve their CVs?

Your SMW can explain:

 Filter all CVs for {{code|Is applicant type::Graduate}} and select the ones that say {{code|Has passed::first round application}}.

<span style="font-weight:bold;color:green;">But better yet, since your SMW "understands" the semantics, it can directly show you the correspondng CVs.</span>

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