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What is the difference between elements and functions?
Elements refer to the individual components that make up a set or a group, such as numbers in a mathematical set or items in a list. Functions, on the other hand, are mathematical relationships between inputs and outputs, where each input is uniquely associated with an output. In simpler terms, elements are like the building blocks, while functions are the rules or operations that define how those building blocks interact or transform.
Do Group functions include nulls in calculations?
FALSE
What is the difference between head and ahead?
Ahead is a direction, the direction toward which you are traveling or facing. Head is the part of the body atop the neck or the principal member of a group or the form in which cabbage and some types of lettuce grow.
What is the difference between candidate key and primary key with example?
Any group of keys or columns (may be one or more than one) which can be used to uniquely refer to any row is together called as candidate key.A primary key only one column name which can be used to uniquely refer any row.there is no much difference b/w these two except the number of columns in consideration.
Difference between comparison to and comparison with?
These are commonly used interchangeably, and the distinction between them is a small one. "Comparison to" should be used when comparison is made between specific people, things, or other instances. Example: John is an excellent student in comparison to his shiftless brother Mike. "Comparison with" should be used when comparison is made to a group or an indefinite (i.e. uncountable) entity. Example 1: John is an excellent student in comparison with the rest of his class. Example 2: John has excelled in school in comparison with what I feared.
