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Re: Categories of Mismatches between Producer and Consumer?

• To: "Roger L. Costello" <costello@m...>
• Subject: Re: Categories of Mismatches between Producer and Consumer?
• From: "Chiusano Joseph" <chiusano_joseph@b...>
• Date: Fri, 11 Jul 2003 16:02:10 -0400
• Cc: xml-dev@l...
• Organization: Booz Allen Hamilton
• References: <3F0F0D39.986B44D7@m...>

I would add:

Category 5: Source of Data Differences

1. The consumer expects the data to be from one source (or set of      
sources), but it results from a different source (or set of sources).
   
   Example: The consumer asks for data from all counties in a given
U.S.    state, but the data is instead from all towns within a single
county.    Or, the consumer asks for data from a specific federal agency
but        they receive data for another federal agency.

Hopefully these occurrences are rare if not inexistent.

Kind Regards,
Joe Chiusano
Booz | Allen | Hamilton


"Roger L. Costello" wrote:
> 
> Hi Folks,
> 
> Terminology: a "producer" creates and outputs data; a "consumer" inputs
> and processes data.
> 
> Objective: Below I try to categorize all the *potential* mismatches
> between a producer and a consumer, with respect to data.
> 
> Question: Are there other categories that I am missing?  Do you agree
> with my categories?
> 
> Category 1: Interpretation Differences
> 
> 1. Structure mismatch: the producer creates the data with a
>    certain structure and the consumer expects it in a different
>    structure.
> 
>    Example: The producer specifies a date as mm-dd-yy but
>    the consumer interprets it as mm-dd-yy.
> 
> 2. Units mismatch: the producer and consumer use different units.
> 
>    Example: the producer gave the data in inches but the consumer
>    interprets the data in centimeters.
> 
> 3. Meaning mismatch: the consumer interprets the data in a different
>    way than the producer intended.
> 
>    Example: the consumer interprets an aircraft "departure time" to
>    mean the time the doors shut, while the producer meant it as the
>    the time the wheels touch off.
> 
> 4. Reference system mismatch: the producer and consumer interprets
>    the data using different reference systems.
> 
>    Example1: the producer expresses time in Greenwich Mean Time (GMT),
>    the consumer expects the time in Eastern Standard Time (EST).
> 
>    Example2: the producer provides directions by giving the distance
>    to the town relative to the center of a known town, while the
>    consumer interprets the distance relative to the outskirts of
>    the known town.
> 
> Category 2: Terminology Differences
> 
> 1. Terminology mismatch: the producer and consumer use different
>    terms to mean the same thing.
> 
>    Example: the producer uses the term f-stop, while the consumer
>    knows it as aperture.
> 
> Category 3: Knowledge of New Capabilities Differences
> 
> 1. New type-of: a consumer may not be coded to understand data about
>    a new class of thing.
> 
>    Example: a producer outputs data about a new type of Camera,
>    an Xj3-SLR. The consumer understands Cameras, but not an
>    Xj3-SLR.
> 
> Category 4: Amount of Data Needed Differences
> 
> 1. Differing expectations of completeness: the producer and consumer
>    may have different ideas on what constitutes a complete set of
>    data.
> 
>    Example: the producer provides the address to the Prudential Tower
>    in Boston as  Prudential Tower, Boston, MA 02215, while the
>    consumer expects the address to also include the street address.
> 
> That's what I have thus far.  Anything that you could add would be
> appreciated.  /Roger
> 
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  • Categories of Mismatches between Producer and Consumer?
    • From: "Roger L. Costello" <costello@m...>

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