Database is a collection of related records stored for use for different applications. Database Management Systems (DBMS) is software that organizes the storage of data. Most of the DBMS are relational, and they have five main components: interface drivers, SQL engines, transaction engine, relational engine, and storage engine. The primary tasks of DBMS are important to understand. While reading them, they may seem like basic principles, but they are important to understand. Database development is used to organize the data. Data interrogation deals with access to the data and the way users can select and access the information they need. Data maintenance is pretty self explanatory and deals with updating and protecting data. I found that application development was the most confusing part and deals with prototypes for screens for data entry. I did not really understand what is meant by this. There are many different types of databases that serve different needs and interests. Much of this database reading was overwhelming for me, but I am hoping that it will make more sense after class.
2.) Introduction to Metadata
Metadata, simply put, is "data about data." However, the meaning of metadata can vary between professionals in varying fields. While metadata used to be almost exclusively a part of the information, the Internet age has brought metadata to the masses. With websites such as Flickr and You Tube, Internet users are creating their own metadata. Information objects always have three parts: content, context, and structure. The purpose of library collection of metadata is to provide access to information. Much of archival and museum metadata collection has focused primarily on the context portion of metadata. Archival metadata primarily deals with accession records, finding aids, and catalog records. Much archival metadata is now available online. Structure is an important part of metadata and is only growing with more metadata available on the Internet. Structure can be a useful aid for searching online. The primary functions of metadata are: organization and description of objects, validation, searching and retrieval, utilization, and preservation, and disposition.
3.)An Overview of the Dublin Core Data Model
There are resources in the world that we would like to describe. Resources can be anything. Language can be very important in descriptions, and it is vital that the same language is used for the same meanings. The Dublin Core Metadata Initiative is working on a core set of semantics to create a kind of dictionary for relevant terms.
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