Answer Posted / rajeev ranjan
As Per oracle, data is stored in the database in the form of Data blocks, extent and Segments.
Physical space of memory is allocated to store data.
The first level is called BLOCKS, next is the extent and last is SEGMENT.
Each block can store multiple data records and Conversely, large no of data records can be stored in data Blocks.
Data is stored in DATA BLOCKS which is the smallest unit in oracle where data is stored in bytes
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