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http://en.wikipedia.org/wiki/Relational_database
No, it is rational.
It is rational. It is rational. It is rational. It is rational.
"Rational" is an adjective and so there cannot be "a rational" (and certainly not "an rational"). Any answer would depend on whether the question was about a rational number, a rational person, a rational argument or "a rational" combined with some other noun.
It is rational.
It is rational.
SQL
One of the advantages of a relational database model is that the broken keys and records and the data complexity are usually simplified. The disadvantage of the relational database model is that it requires sophisticated processing power which is very costly.
Rational
1.14 is rational.
4.6 is rational.
It is a database application.It is a database application.It is a database application.It is a database application.It is a database application.It is a database application.It is a database application.It is a database application.It is a database application.It is a database application.It is a database application.
No, it is rational.
It is rational. It is rational. It is rational. It is rational.
It is a rational number
No, it is rational.
Rational.
It is rational