Metadata is structured information that describes, explains, or provides context about other data, making it easier to organize, retrieve, and use. Often referred to as “data about data,” metadata enhances the discoverability and usability of resources, particularly in complex systems where vast amounts of information are managed. It plays a crucial role in fields such as libraries, databases, web development, and digital asset management.
There are several types of metadata, each serving a specific purpose. Descriptive metadata provides information about a resource, such as its title, author, and keywords.
Structural metadata describes how data is organized, such as relationships between database fields or the sequence of chapters in a document.
Administrative metadata is essential for managing data over time, and includes details about its creation date, modification history, and access permissions.
Technical metadata describes the technical characteristics of a resource, such as file format, resolution, or software dependencies.
Rights metadata includes legal and intellectual property information, such as copyright and usage restrictions.
Provenance metadata documents the history and origin of the data, offering insights into its source, ownership, and updates.
Statistical metadata describes the methodologies or variables behind datasets, crucial for understanding and using statistical information.