1. Choose the odd one from the following.
Primary key, Unique, Distinct, Default, Check
2. Justify your choice
1 Answers
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What do you understand by terms ‘primary key’ and ‘secondary key’ in a database?
A primary key is a field that identifies each record in a database table admitting that the primary key must contain its UNIQUE values. A secondary key shows the secondary value...
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Which one of the following is unique feature of cardiac muscle?
The correct answer is (B) Presence of intercalated disc
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The statement “the sum of two odd numbers is odd” is
B) always false
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Use the definition of Odd and Even functions to determine whether each of the following functions is Odd, Even, or neither. Must show your work for credit II! 1) \( f(x)=\frac{x}{1-x^{3}} \) 2) \( f(x)=\frac{x^{2}}{1+x} \) 3) \( \quad f(x)=x-|x| \)
(1) f(x) = \(\frac{x}{1-x^3}\) f(-x) = \(\frac{-x}{1-(-x)^3}\) = \(\frac{-x}{1+x^3}\) ≠ -f(x) or f(x) ∴ f(x) is neither even nor odd function. (2) f(x) = \(\frac{x^2}{1+x}\) ∴ f(-x) = \(\frac{(-x^2)}{1+(-x)}\) = \(\frac{x^2}{1-x}\) ≠ -f(x) or f(x). (3) f(x) = x-|x| ∴ f(-x) = -x-|-x| = -x-|x| = -(x+|x|) ≠ -f(x)...
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Choose the odd one w.r.t. Alein species invasion
Answer is C: clarias gariapinus
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Which shortcut key is used to apply default paragraph style? (a) Ctrl + 0 (b) Ctrl + 1 (c) Ctrl + 2 (d) Ctrl + 3
Correct answer is (a) Ctrl + 0
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What is the key difference between primary and secondary sewage treatment?
Primary treatment involves the removal of large sized floating and suspended solids by physical methods, while secondary treatment involves decomposition of organic matter by microbial action.
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A ________ is a reference to a field in another relation or table (a) Primary key (b) Candidate key (c) Foreign key (d) Super key
(c) Foreign key
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Assertion: Hoffmann’s bromamide reaction is given by primary amines. Reason: Primary amines are more basic than secondary amines.
(iii) Assertion is correct statement but reason is wrong statement.
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Define primary key with an example.
A field which uniquely identifies each record in a table is known as the primary key. e.g. emp id is the primary key of the Employee table.
2 Answers 1 views