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Explain the dependency relationship of object oriented
A dependency is a relationship which states that a change in specification of one thing can affect another thing, but not necessarily vice versa. In UML, it is shown by dashed directed line. The notation for dependency among components and packages is shown as:
Figure: Dependency between packages
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
Lossless-Join Decomposition Let us show an intuitive decomposition of a relation. We require a better basis for deciding decompositions since intuition may not always be r
Consider the relation PERSON. If you want to display details of persons having age less than or equal to 30 than the select operation will be used as follows: σ AGE The resu
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We require an advanced system for a Sports Centre, you are concerned only with representing the data discussed below about bookings and members. (The complete system may contain ot
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The State of Newyork certifies firefighters throughout state keep track all of them, as well as the state’s of fire departments. Each fire department has unique department number
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