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E-R model uses this symbol to represent weak entity set ?
A Doubly outlined rectangle symbol is used to represent weak entity set.
Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF. Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relati
A distributed database is defined as "a collection of multiple logically interrelated database which are physically distributed over a computer network" (a) Give any three advan
Multiple-mode locks : It offers two locks: exclusive locks and shared locks. But why do we require these two locks? There are a lot of transactions in the database system that neve
what is cascading? what is rollback cascading? please explain in detail
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
What are the several forms of identity? a) Value b) Name c) Built-in
What is persistency? Persistency ensures which data is stored and that after the object is no longer available (program stops running) the data will be available to other users
This project will involve designing and creating a database for an organization. In the design of a database, there is no single "perfect" design. So your database design may not
what benefit can a company gain by managing its own infrasture and services
What is inheritance? Inheritance is an object orientation concept that allows reusability of code / design. Basic sense of inheritance is that if one class is predefined than a
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