1 / x Metadata GRS32806 Arnold Bregt

Contents Presentation Role of Metadata in society Functions of Metadata (for GI) Metadata standards Metadata within SDIs

What is this?

Stsul.dat

It is… Starting depth pyritic layer Kalimantan, Indonesia

Experiment Two bottles

There are many Metadata standards 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

Identification Quality Spatial reference Meta-data reference Classification Administr. meta-data Overview CEN meta-data Data definition CEN metadata standard for GI CEN meta-data Extent

Main elements ISO 19115

Main elements

Main elements (INSPIRE)

The ISO It describes what not how About 300 elements Version from 2003 ISO – 2: Geographic information - Metadata - ISO 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).