System Analysis and Design
Management's decision to rent a computer system may be based upon

all of the listed here
tax advantages
desire to avoid a large one-time payment
operational flexibility in changing hardware

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System Analysis and Design
Advantages of Relational Database Management systems are

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

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