Define SDI. Also explain the components and operational features of SDI.

Spatial Data Infrastructure (SDI) is a set of technology, policies, standards, and institutional arrangements that are used to acquire, process, distribute, and manage spatially referenced data. This infrastructure enables the discovery, access, visualization, and management of geospatial data from multiple sources, in order to support decision-making, research, and other activities in various fields such as natural resources, urban planning, emergency management, and many more. SDI allows for the integration of data from different sources, scales, and levels of government and organizations, making it possible to access and use geospatial data in a consistent, accurate and efficient way.

An SDI is typically composed of several components, including the data itself, metadata (information about the data), hardware and software for storing and managing the data, and standards for data and metadata. These components are organized and coordinated by a network of institutions and organizations, such as government agencies, _____ ____ _______ _________ _________ _______.
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