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Describe the two types of methods for retrieving rows in Python?
Mixed fragmentation: Sometimes, horizontal fragmentation or vertical fragmentation of a database schema by itself is insufficient to sufficiently distribute the data for some appli
what is cascading? what is rollback cascading? please explain in detail
how to submit answers softcopy
Explain the disadvantages of file oriented approach? In the oriented approach Applications are designed in isolation. Design of application is optimized for one application. In
What's the difference between a primary key and a unique key? Both primary key and unique key enforces uniqueness of the column on which they are explained. But by default prim
The insertion of a tuple in the aim of reference does not cause any destruction. Though, insertion of a tuple in the relation in which, we has the foreign key, for instance, in ASS
explain the level architectures of the database management system
Question: A DBMS built for Online Transaction Processing (OLTP) is generally regarded as unsuitable for data warehousing. Each system is designed with a different set of requir
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
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