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MetadataGRS32806

Arnold Bregt

Contents Presentation

Role of Metadata in society

Functions of Metadata (for GI)

Metadata standards

Metadata within SDIs

What is this?

Stsul.dat

0 0 201 0 155 0 3510 0 4575 0 30. . .. . .

It is…

Starting depth pyritic layer

Kalimantan, Indonesia

Experiment

Two bottles

There are many Metadata standards http://en.wikipedia.org/wiki/Metadata_stand

ards

Dublin Core (15 elements): describe resources for the purposes of discovery

(: 1.Title 2.Creator 3.Subject 4.Description 5.Publisher……..

Functions of Metadata (for GI)

Why describe spatial datasets?

Manage (storage and change) Search (content global ) Exchange (format ) Use (content details, Quality)

Target groups

Personal: (storage)

Own organisation: (storage and content)

Other organisations: (content, format, quality, contact person)

Extent description

Target groups Functions

manage search exchange use Personal + + - -

Own organisation ++ ++ ++ ++

Other organisation - +++ +++ +++

Metadata standards?

Personal standard

Organisational standard

(inter)national standards

Compile your own Metadata standards

By a “metaplan approach”

International standards

America (FGDC)

Europe (CEN)

ISO (ISO 19115)

Implementation of Metadata standards

0102030405060

CENFGDC

ANZLIC

Nation

al

Others

(Inho

use)

ISO-projec

ts

%

2000 April

2000 Dec.

2001 Dec.

2002 Dec.

Identification

Quality

Spatial reference Meta-data

reference

Classification

Administr.meta-data

OverviewCEN

meta-data

Datadefinition

CEN metadata standard for GI

CEN meta-data

Extent

Main elements ISO 19115

Main elements

Main elements (INSPIRE)

The ISO 19115 It describes what not how

About 300 elements

Version from 2003

ISO 19115 – 2: Geographic information - Metadata - ISO 19139 Implementation specifications

Profiles for ISO 19115

Metadata within SDIs

Metadata play a central role in SDI: Publishing data Discovering data Using data

To keep metadata “up to date” is problematic

There are attempts to automate it.

Use of Metadata

After Winer, 2011

Metadata evolution

Olfat et al., 2010

FAO Geonetwork

INSPIRE

Nertherlands

Conclusions Describing spatial datasets with metadata

is essential to keep the data accessible within SDI’s.

For (inter) national exchange the use of a standard is a must.

A problem with describing meta-data is that the personal requirements are less than the organisational requirements.

Assignment of the week

Please prepare a presentation about your SDI case from a technological point of view.

Concentrate on the use meta-data and the role of Service Oriented Architecture (SOA) in your SDI case.

Is SOA implemented and how?

Provide an example of the functioning of your SDI (In the case of oral presentation through a life demonstration).