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Write short notes on tuple relational calculus. The tuple relational calculation is anon procedural query language. It defines the desired information without giving a particul
What is the difference between SQL Server 2000 clustered and nonclustered indexes? With a clustered index, the data are kept in the bottom level of the index and in the similar
The figure below depicts the conceptual diagram of a banking system. (a) Describe one example relevant to the system in figure, for each of the 4 types of enterprise appl
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What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
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
State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
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