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What are data segments?
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Answer / saraswathi muthuraman
Oracle manages the storage space in the datafiles of a
database in units called data blocks. A data block is the
smallest unit of data used by a database.
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Answer / vinod pragadeesh
In oracle database for effective data management the
database uses three groups, datablock,extent and segment.
datablock : smallest unitof logical storage for a DB object
extent :a group of contigious data block
segment :when an object take all the extents together
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