explain the weak entity set an entity set which
Explain the Weak Entity Set
An Entity set which does not have sufficient attribute to make a primay key is known as weak entity set. For instance, dependents of an employee in an organization do not comprise an identifying attribute.
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define the concept of aggregation give two examples where this concept is useful ans aggregation transforms a relationship among the objects into
explain superkeyans a superkey is described in the relational model of database organization like a set of attributes of a relation variable for
the barcelona football club is considering the signing of a player of international fame the problem is that the player has a reputation for having a
explain healthcare burden of heart diseasescad and its complications use up a substantial portion of the scarce healthcare resource of the country it
explain the weak entity set an entity set which does not have sufficient attribute to make a primay key is known as weak entity set for instance
explain the attribute inheritanceans throughout the rendering of the objects in a view attribute sets of objects higher in the view hierarchy are
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explain what is relation a database relation is a predefined row or column format for storing information in a relational database relations are
explain the burden of hypertension in heart diseases since 1942 there have been several small and large population-based studies on hypertension a
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