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Metadata is data that contains information about other data. It describes the properties of data and helps organize, understand, and manage it. For example, metadata can include information about the content, structure, context, time of creation, and access rights of data.
Metadata is important for ensuring that data can be used effectively and efficiently. For example, they enable data to be categorized and searched in databases and archives, optimize search engines, simplify the management of digital resources, and improve the interoperability of systems.
There are several types of metadata, including descriptive, structural, administrative, and technical. Descriptive metadata describes the content of data, while structural metadata contains information about the relationships between data. Administrative metadata contains information about the creation, management, and use of data, while technical metadata contains details about the technical aspects of data, such as file format, size, and compression.