System Analysis and Design
Which of the following is not a part of a Data Flow Diagram?

None of these
Data store
arrow
process represented by a bubble circle (circle)
disk storage

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System Analysis and Design
In a Decision tree

all of the listed here
the branch, to be followed, depends on the conditions and decisions, to be made
the root is drawn on the left and is the starting point on the decision sequence
the nodes represent the conditions, with the right wise of tree listing the actions to be taken

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System Analysis and Design
Indexed-Sequential organization

has records placed randomly throughout the file
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

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