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Give two profit of Reuse of Code. Reusing the implementation . Place existing class directly inside a new class. The new class can be made up of any number and type of the oth
please describe the data base management with the easy example &give the application?
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Have database built but having problems with some questions that go with the database
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
What are ways of finding out either an update is required or not for derived attributes? The ways to find out an update is required or, not are as: Explicit update
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
Name the various privileges in SQL? A) Delete B) Select C) Insert D) Update
For every n-ary relationship type R where n>2, we make a new table S to represent R. We contain as foreign key attributes in s the primary keys of the relations that show the parti
It defines that the tuple in one relation that refers to another relation must refer to an existing tuple in that relation. This constraint is states on two relations (not essentia
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