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What is Distributed system ?
Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in which cooperate in performing certain assigned tasks.
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Do you have experts of the dbms
Nested Queries Let us see some more complex queries in this section. Sub-queries: Some of the basic concerns of sub-queries are: A sub-query is a SELECT statemen
Dirty Reads: T10 reads a value which is updated by T9. This update has not been committed and T9 aborts. T9 T10 Value of x old value = 200
Ask q“A database will be made to store information about patients in a hospital. On arrival, each patient’s personal details (name, address, and telephone number) are recorded wher
Question: (a) Define the term e-Government and briefly explain, using appropriate examples, the aspects it covers. (b) Give four reasons as to why a country should adopt e
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
Update or Modify operation alters the existing values. If these operations alter the value that is the foreign key also, the only check need is the similar as that of the Insert op
WHAT IS DBMS
To do the division operation R1 ÷ R2, R2 should be a correct subset of R1. In the following example R1 have attributes A and B and R2 have only attribute B so R2 is a correct subse
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