System Analysis and Design
The reservation system of Indian railways is an example of

Interactive decision support system
None of these
management controls system
transaction processing system
expert system

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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.
has records placed randomly throughout the file
uses an index for each key type

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System Analysis and Design
A system design is said to be functionally modular if

None of these
the system makes extensive use of function. keys for maximum user assistance
the system is developed using structured programming through COBOL or PASCAL
the system is able to handle all the function of the application
each module performs a specific function and can be developed relatively independently by programmers

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System Analysis and Design
A Decision table

shows the decision paths
gets an accurate picture of the system
documents rules, that select one or more actions, based on one or more conditions, from a set of possible conditions.
represents the information flow

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