Article 1: Database. http://en.wikipedia.org/wiki/Database
A database is a collection of records and data. The software used is the database management system.
Databases started out using punch cards and data tape. I find this amusing, it must have been a tedious process!
Different databased models are used, some include:
Hierarchical Model, data is organized into an inverted tree-like structure, implying a multiple downward link in each node to describe the nesting, and a sort field to keep the records in a particular order in each same-level list. Keeps a hierarchy of information with logical relationships.
Network Model, can have any number of named relationships
Relational Model, most commonly used, a table where information about a particular entity is represented in columns and rows.
Article 2: Anne J. Gilliland. Introduction to Metadata, pathways to Digital Information: 1: Setting the Stage http://www.getty.edu/research/conducting_research/standards/intrometadata/setting.html
Metadata is data about data. It is any object that can be manipulated.
Metadata has 3 features:
*Content-what the object is about (intrinsic)
*Context-who, what, where, when, how (extrinsic)
*Stucture-formal set of associations within or among individual information objects (intrinsic or extrinsic)
Article 3: Eric J. Miller. An Overview of the Dublin Core Data Model http://dublincore.org/1999/06/06-overview/
My guess on this article is that the Dublin Core Metadata Initiative (DCMI) is trying to find a way to store and recover all the metadata created. Possibly to find a way to combine all links to the information?
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2 comments:
Wow- you have a really clear and concise way of writing about what we read! I think I understood the articles the way you did, you just write better!
Your comment on the Dublin article was a good one. I read it quite a few times and really couldn't quite understand exactly what it was all about. I understood the need to make a language universal but the more i read, i think i just got more confused.
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