By :S P Sood
- The concept and meaning of Metadata
- The purpose and functions of Metadata have been clearly explained citing different functions with suitable examples.
- Further Types of metadata and benefits also stated in an understandable manner.
- In the Introduction, you can understand the reasons for the development of Dublin Core.
- The Initiatives and efforts made by different organizations for the genesis of Dublin Core have also discussed.
- What is Dublin Core Metadata Standard and the Mission/Goal have been clearly described.
- Two Types, namely Simple Dublin Core and Qualified Dublin Core have been stated.
- 15 elements of Simple Dublin Core has been explained elaborately giving appropriate explanations as and when necessary. Further 3 more elements besides the above 15 have also mentioned.
3.1 MEANING OF METADATA
- ‘Meta’ means something of a higher or more fundamental kind.
- Data which describes a resource (s) or data which is associated with an object that describes that object.
- Refers to networked electronic resources, all digital object that exists on the Internet and descriptive information about www.
- Also makes it easier to retrieve, use or manage an information resource.
- Commonly stored in database systems and linked to the objects described.
- HTML web page and the indexing data held by search engines is also metadata linked to the Information resource through Hypertext links to the URL.
- On the whole, the metadata can answer what, why, how, when, who and how about every facet of the data that are being documented.
- Metadata could be both Machine and Human generated description of a resource e.g. Bibliographic Database and OPAC.
3.2 PURPOSE OF METADATA
- To facilitate discovery of relevant information in the context of www and internet and helps to organize electronic resources.
- To be a source of bibliographic data.
- To facilitate users for data searching and browsing and instruct how to interpret the data and, how to transfer the data and data documentation.
- Facilitate inter operability and supports digital identification and support archiving and preservation
- To characterize the original work sufficiently for the user to understand its contents ,purpose and conditions of use.
- Serves as a basic tool for cataloguing of web resources and to organize vast amount of information available on the INTERNET
- For easy accessibility and effective use of the required information.
3.3 FUNCTIONS OF METADATA
- Metadata performs the same functions as an efficient, comprehensive and updated catalogue in resource discovery.
- Allowing resources to be found by relevant criteria.
- Identifying resources.
- Bringing similar resources together and separating dissimilar resources providing location information.
3.4 TYPES OF METADATA
3.5 BENEFITS OF METADATA
- Resource Dscovery, Location and Resource Documentation
- Resource Selection, Evaluation and Assessment
- Safeguarding Intellectual Property Right
- Facilitates to filter obsolete data and provide only current information
- Permits to sort the information according to various forms besides according to subject content.
4. 2 BACKGROUND
4.3 WHAT IS DUBLIN CORE METADATA STANDARD?
- It is by far the most important metadata initiatives for web resource description.
- It is an exchange format for sharing records.
- Dublin core standard was intended to be descriptive rather than evaluating.
- It is an effective element set for describing a wide range of networked services.
- It is an excellent tool for resource discovery for networked resources.
4.4 MISSION OF DUBLIN CORE
- Confronted with exponential growth of electronic resources and problem to catalogue all these resources, the goal was:
- To define a few elements and some simple rules that could be applied by non cataloguers.
- Simplicity of creation and maintenance.
- Interoperability among collections and indexing systems.
- Commonly understood semantics