1. 2 Graphical Representation of the Elements of the Content Standards for Digital Geospatial...

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Graphical Representation of the Elements

of theContent Standards

forDigital Geospatial Metadata

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4


Section

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Compound Elements - not raised

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Data Elements - raised with shadows

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SectionCompound Elements -

not raised

Data Elements - raised with shadows

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Relating the Elements

Concerns– How are elements grouped?– What’s mandatory? What’s not?– What can repeat? How many times?

The standards use “production rules” with a special syntax to describe this information.

The graphic representation uses nested boxes, shading, and labels.

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CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2

How Are Elements Grouped?Compound elements are composed of

other compound or data elements. The composition is represented by nested boxes.

Compound Element 1 is composed of Compound Element 1.1 and Data Element 1.2

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CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2



Compound Element 1.1 is composed of Data Element 1.1.1 and Data Element 1.1.2.

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CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2



Compound Element 1 is composed of Compound Element 1.1 and Data Element 1.2

Compound Element 1.1 is composed of Data Element 1.1.1 and Data Element 1.1.2.

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What’s Mandatory? What’s Not?

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Mandatory - must be provided.

MeaningDataElement

CompoundElement

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MeaningDataElement

CompoundElement

Mandatory if Applicable - must be provided if the data set exhibits the defined characteristic.

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Optional - provided at the discretion of the data set producer.


MeaningDataElement

CompoundElement

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Optional - provided at the discretion of the data set producer.


MeaningDataElement

CompoundElement

Color and Shaded Versions

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CompoundElement 1

(can be repeatedunlimited times)

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2

If an element can be repeated independently from other elements, a label below the element name states how many times the element may be repeated. If there is no label, the element does not repeat independently from other elements.

In the illustration, Compound Element 1 can be repeated an unlimited number of times. Thus, the following block of data is repeated:

Compound Element 1 Compound Element 1.1 Data Element 1.1.1 Data Element 1.1.2 Data Element 1.2

What Can Repeat?How Many Times?

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Decision 1

Decision 1.1

Decision 1.1.1

Decision 1.1.2

Decision 1.2

Making Decisions About Documenting Your Data

Work down the columns.

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Decision 1

Decision 1.1

Decision 1.1.1

Decision 1.1.2

Decision 1.2


Decisions about higher-level elements (outer boxes) influence decisions about lower-level elements (inner boxes). So, for example, decision 1 usually influences decision 1.1 and 1.2.

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Decision 1

Decision 1.1

Decision 1.1.1

Decision 1.1.2

Decision 1.2


Decisions about elements at the same level usually are made independently. So, for example, decision 1.1 and decision 1.2 usually are made independently of each other.

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Using the Graphics to Make Decisions - 1

All elements are colored yellow, so all are mandatory and must be reported.

M M / A O

CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2

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All elements have no shading, so all are mandatory and must be reported.

M M / A O

CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2

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Compound Element 1 is mandatory.

Compound Element 1.1 is optional. The producer must decide if it wants to provide the element.

If yes, Data Elements 1.1.1 and 1.1.2 are mandatory.

If no, do not report Compound Element 1.1, Data Element 1.1.1 or 1.1.2, and skip to Data Element 1.2.

Data Element 1.2 is mandatory. M M / A O

CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2

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Compound Element 1 is mandatory.

Compound Element 1.1 is mandatory.

Data Element 1.1.1 is mandatory.

Data Element 1.1.2 is mandatory if applicable. The producer must decide if the data set has the characteristic defined by the data element. If yes, then Data Element 1.1.2 is mandatory. If no, then Data Element 1.1.2 is not reported.

Data Element 1.2 is optional. M M / A O

CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2

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Compound Element 1 is mandatory if applicable. If not applicable to the data set, do not report any elements. If applicable, it is mandatory and:

Compound Element 1.1 is mandatory.

Data Element 1.1.1 is mandatory if applicable. If not applicable, do not report it. If applicable, it is mandatory.

Data Element 1.1.2 is mandatory.

Data Element 1.2 is optional. M M / A O

CompoundElement 1

CompoundElement 1.1

DataElement 1.1.1

DataElement 1.1.2

DataElement 1.2

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How to Read the Graphic Representation

1 Start at the section symbol

(1).

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3

2

1 Start at the section symbol (1).Go to the leftmost column (2),

and work down (3).

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3

4

5

2


and work down (3).After completing the column,

move right one column (4) and work down (5).

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3

4

5

6

2




Continue across the graphic (6) until all the elements have been considered.

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3

4

5

6

2




Continue across the graphic (6) until all the elements have been considered.

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Content Standards for Digital Geospatial Metadata

IdentificationInformation

DataQuality

Information

SpatialData

OrganizationInformation

SpatialReference

Information

Entityand

AttributeInformation

MetadataReference

Information

Mandatory

Legend

4 52 6 731

DistributionInformation

Metadata

MandatoryIf

Applicable

1. 2 Graphical Representation of the Elements of the Content Standards for Digital Geospatial...

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