System Analysis and Design
Inverted list organization

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

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System Analysis and Design
Advantages of Relational Database Management systems are

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

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System Analysis and Design
Data manipulation language (DML)

describes how data are structured in the data base
all of the listed here
determine how data must be structured to produce the user's view
specifies for the DBMS what is required; the techniques used to process data

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