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A relation schema R is in BCNF with respect to a set F of functional dependencies if for all functional dependencies in F+ of the form a->b, where a and b is a subset of R, at least one of the following holds:
* a->b is a trivial functional dependency (b is a subset of a)
* a is a superkey for schema R
Question : a) Describe the following modes of wave propagation: - Line of sight - Ground waves - Skywaves b) Why can waves with a very low frequency be used for submar
It is an object of a number of classes whose purpose is to indicate that a real object of that class does not exist. One common use for a null object is a return value from a membe
Q. What is File allocation table? FAT maps the usage of data space of disk. It comprises information about space used by every individual file and unused disk space as well as
COMPUTER ORGANIZATION & ARCHITECTURE 1. What do you mean by digital computer? Explain the block diagram of a digital computer. 2. What do you mean by Difference Engine? Expl
Stack unwinding in C++ is a process during exception handling when the destructor is known for all local objects the place where the exception was thrown and where it is caught.
In sense of Database Management System (DBMS) LOGICAL DATABASE is a database Structure. False LOGICAL DATABASE is not a database Structure.
how create database design for pharmacy by diagram and query
Q. Characteristics of decision support system? Characteristics of DSS- The qualities of the DSS are as follows: - 1. DSS focus on towards providing assistance in analyzing s
What is the difference between the C#.NET and VB.NET? VB.NET - It didn't have the XML Documentation. - It didn't have the Operator Overloading. - It didn't have the P
Q. Show the Features of a typical floating-point representation? The features of a typical floating-point representation of 32 bits in above figure are: Left-most bit is
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