System Analysis and Design
A Decision table

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

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System Analysis and Design
Advantages of Relational Database Management systems are

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

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