DBMS - Database Management System Flat file - one table databases. Relational Databases - matches data by using common characteristics found within the data set. The resulting groups of data are organized and are much easier for people to understand. Primary Key - Unique ID Database normalization - save storage space and ensure the consistency of your data. Performance can be improved. Meta Data - Metadata is structured data which describes the characteristics of a resource. It shares many similar characteristics to the cataloguing that takes place in libraries, museums and archives. The term "meta" derives from the Greek word denoting a nature of a higher order or more fundamental kind. A metadata record consists of a number of pre-defined elements representing specific attributes of a resource, and each element can have one or more values. Data dictionary - collection of descriptions of the data objects or items in a data model for the benefit of programmers and others who need to refer to them Hypermedia -describes a website, used as a logical extension of the term hypertext in which graphics, audio, video, plain text and hyperlinks intertwine to create a generally non-linear medium of information.
