System Analysis and Design
In Decision trees

nodes represent the conditions, with the right side of tree listing the actions to be taken
All of these
the branch depends on the condition and decisions to made
the root is drawn on the left and is the starting point on the decision sequence.
None of these

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System Analysis and Design
Direct-access 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.
has records placed randomly throughout the file

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