11 - Metadata Flashcards
What can the catalog include?
- how accurate & recent the data is
- restrictions associated with using and sharing the data
- important processes in its life cycle such as generalizing features
Metadata questions
- What does the dataset describe?
- Who produced the dataset?
- Why was the dataset created?
- How was the dataset created?
- When was the dataset created?
- How reliable is the data (scale?); what problems remain in the
dataset? - How can someone get a copy of the dataset?
Why have metadata?
- File Systems are getting bigger
- Data sets are larger
- File counts have increased
- People forget/Record keeping
Advantages of metadata
▪ Enables data exchange
▪ Efficient use of (existing) resources
▪ Building productivity
▪ Enhancing data quality (data standards)
▪ Cost saving on business activities
▪ Reduce the redundancies\duplication
▪ Re-sell value
FGDC
Federal geographic data committee
CSDGM
Content standard for digital geospatial metadata
ISO
International standards organization
Bill used today for metadata
ISO 19115
7 NB elements
- Dataset title
- Dataset reference date
- Dataset language
- Dataset topic category
- Abstract/Summary
- Point of contact
- Date Stamp
14 Conditional Elements
- Responsible party
- Geographic location
- Spatial resolution
- Distribution format
- Reference system
Metadata content is determined by?
The nature of the metadata (its type, what its trying to tell)
Descriptive metadata def
Describes a resource for purposes such as discovery and identification (author, title, abstract, keywords)
Structural metadata def
Metadata about groups of metadata and how compound objects are put together (how pages are ordered to form chapters)
Administrative metadata def
Info to help manage a resource. (when and how created, file types, (technical info) & who can access it)
Metadata extension
.xml (Info of shp)
Index file extension
.shx (Index of feature geo)
