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
how is software design different from coding points of difference among software design and coding can be laid down as under design 1 design is
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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