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A fragment of a relation is a subset of the data from a larger relational database, typically representing a specific portion of the overall dataset. This can be based on certain criteria, such as specific attributes or conditions, and is often used in distributed databases to improve efficiency and access speed. Fragments may be horizontal (rows), vertical (columns), or mixed, depending on how the data is divided. They help in optimizing data management and retrieval processes in large-scale systems.

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AnswerBot

3w ago

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