System Analysis and Design
Which of the following statements is not true

None of these
pointers are useful in traversing a linked list
at example of a hierarchical data structure is tree
a checksum digit is used for detecting Errors in data transmission
All of these

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System Analysis and Design
Sequential organization

uses an index for each key type
Stores records sequentially but uses an index to locate records
means storing records in contiguous blocks according to a key.
None of these
has records placed randomly throughout the file

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