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

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

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System Analysis and Design
Inverted list organization

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

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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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System Analysis and Design
The rule(s) to follow in constructing decision tables is (are):

the logic of the table is independent of the sequence in which conditions rules are written, but the action takes place in the order is which the events occur.
a decision should be given a name
all of the listed here
standardized language must be used consistently.

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