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What is known as sequential file organization? In the sequential file organization, the records are kept in sequential order, according to the value of a "search key" of every
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
E-R Model This data model is based on real world that consists of basic objects named entities and of relationship among these objects. Entities are illustrated in a database
Discuss the differences among the candidate keys and the primary key of a relation. Give instance to describe your answer? A candidate key is one that can be used as primary ke
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
Explain pipelining. Ans: In order to describe pipelining in simple terms, think of it as breaking down processor functions into smaller and smaller parts. For instance,
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
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:
Give the limitations of SQL authorization. The code for checking authorization becomes intermixed with the rest of the application code. Implementing authorization by applic
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