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WHAT IS METADATA?

Modified from a presentation prepared by:

What is metadata?

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Metadata is that component of data which describes it

Components of Data

Chlor (chlorophylla concentration)

measured in :g/l

Latitudes andlongitudes weremeasured using ...

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This is the metadata for this

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This is the metadata for this

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This is the metadata for this

Author(s) Boullosa, Carmen.

Title(s) They're cows, we're pigs /

by Carmen Boullosa

Place New York : Grove Press, 1997.

Physical Descr viii, 180 p ; 22 cm.

Subject(s) Pirates Caribbean Area Fiction.

Format Fiction

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This is the metadata for this

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Identification_Information

Citation

Citation_Information

Originator: NOAA Coastal Services Center

Publication_Date: 19971131

Title: Hurricane Storm Surge

Geospatial_Data_Presentation_Form: Map

Publication_Information

Publication_Place: Charleston, SC

Publisher: NOAA Coastal Services Center

Larger_Work_Citation

Citation_Information

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Why do we need standards?

Standards are created to

•Save time

•Save money

•Ensure quality

•Ensure completeness

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The importance of metadata

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Poor documentation often leads to lossof critical information

Who’s mom?

Where was this taken?

How old is this photo?

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The importance of metadata standardsin libraries

Author(s) Boullosa, Carmen.

Title(s) They're cows, we're pigs /

by Carmen Boullosa

Place New York : Grove Press, 1997.

Physical Descr viii, 180 p ; 22 cm.

Subject(s) Pirates Caribbean Area Fiction.

Format Fiction

Libraries have been using metadatafor many years to describe,manage, and help locatepublications and other items

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•To ensure all relevant informationis documented

Why a metadata standardfor geospatial data?

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Projection
Datum

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Why should you (or your staff) write goodmetadata?

•Your data is meaningless without it

•So you won’t FORGET how you collected and processedYOUR OWN DATA

•So information won’t be lost when an employee leaves

•So the data can be used again in the future

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•Any data with a spatial component including:

•Maps

•Charts

•In situ data (data collected at a specific site orstation)

What is geospatial data?

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1990 Census

Miami 19.0 27.5 10.5

New Orleans 16.3 21.3 11.4

Portland 7.4 10.0 5.8

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Why other people should share theirmetadata with you

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•So you can find their data

•So you don’t have to go out and collect ityourself

•So you can tell if you want their data

•So you can tell how to use their data

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•It enables individuals using data produced byanybody else (is that population data set relatedto 1960 or 2000?)

•It prevents individuals from stealing your data(all sources are acknowledged)

•It makes your data visible so others can seewhat you’re doing

•It encourages others to share their data

Benefits of sharing metadata

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Uses of metadata in information systems

As input to analysis tools

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SST datafrom NOAA

Buoy datafrom NBDC

Map fromUSGS