System Analysis and Design
Advantages of Relational Database Management systems are

Security controls can be more easily implemented.
None of these
Flexibility, of relating different logical files
All of these
Data independence since it allows the database to grow by adding new attributes and relations.

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System Analysis and Design
A structure chart is

All of these
a hierarchical partitioning of the program
a statement of information processing requirements
a document of what has to be accomplished
None of these

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System Analysis and Design
Sequential organization

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

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