System Analysis and Design
The structure chart is:

a statement of information-processing requirements
a hierarchical partitioning of the program
a document of what has to be accomplished
all of the listed here

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System Analysis and Design
The approach used in top-down analysis and design is

to prepare flow charts after programming has been completed
all of the listed here
to identify a top level function an d then create a hierarchy of lower-level modules and components.
to identify the top level functions by combining many smaller components into a single entity

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System Analysis and Design
Direct-access organization

Stores records sequentially but uses an index to locate records
means storing records in contiguous blocks according to a key.
uses an index for each key type
has records placed randomly throughout the file

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