This week you were introduced to two terms - Metadata and Schema. Many times these terms seem to be used interchangeably. Please describe two (2) examples that illustrates the difference.
Metadata is information about data. According to the Online Dictionary for Library and Information Science, there are three types of metadata: descriptive, structural, and administrative. Each type helps provide information on the data itself. Different types of data can have different types of metadata. For example, a book can have metadata such as page number, physical book dimensions, whether there are illustrations, maps, etc. However, a piece of art in a museum would need to have very different metadata such as medium, physical dimensions, time period, creator, etc.
A schema is the structure of the metadata. It provides information on how the metadata is set up, which fields are mandatory, and what each field of metadata contains within. It is like a map of the information so that users can input metadata uniformly. It also explains the relationships between different fields. Metadata schemas have been created for broad use, for example, Dublin Core which is adaptable enough to be used for various objects. Data that need very specific information and therefore a specific schema has also been created, for example, the Cataloging Cultural Objects (CCO) schema for visual art and media.
If we were to catalog the Mona Lisa some metadata information might include:
Title: Mona Lisa
Painter: Leonardo Da Vinci
Medium: oil painting
Created date: 1503-1507
Subject: portrait of a female
Location: Louvre
If we were to catalog this into a CCO schema, it might look something like this:
Class: painting
Work Type: painting
Title: Mona Lisa
Creator display: da Vinci, Leonardo | Role: painter
Creation date: Earliest:1503 Latest:1507
Description: Portrait of a female, slightly smiling.
Current Location: Louvre. Paris, France.
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