System Analysis and Design
Advantages of Relational Database Management systems are

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

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System Analysis and Design
Inverted list organization

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

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