Saturday, October 2, 2010

Reading Notes -- Week 5

Database - Wikipedia

Once again, Wikipedia gives us the basics.  A database is a collection of data organized for one or more uses.  The database can be classified many ways usually by contents - bibliographic, statistical, etc.  The article also explains types of Database Management Systems (DBMS) and their components.  It also explains the types of databases and their functions.  Then it goes on to explain some features of databases and their functions, including security and locking.

An Introduction to Metadata

Metadata is defined as data about data.  It is a widely used term, but is seen differently by those who use it.  Metadata is the information object of data - this includes content, context, and structure.  Context has often been the area largely focused on, especially in the museum community.  Structure has become more important and interesting as computers become more and more sophisticated.  Metadata has many uses and attributes.  Functions include: creation, multiversioning, reuse, recontextualization of information objects, organization and description, validation, searching and retrieval, utilization and preservation, and disposition.

An Overview of the Dublin Core Data Model

According to the article, the Dublin Core Metadata Initiative (DCMI) is a international effort designed to foster consensus across disciplines for the discovery-oriented description of diverse resources in an electronic environment.  It seeks to create an internationally  recognized definitions of concepts concerning metadata.  It uses an encoding system similar to XML to create a modular vocabulary. 

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