Question 1

Which operator performs pattern matching ?

Accepted Answer

LIKE is a keyword that is used in the WHERE clause. Basically, LIKE allows us to do a search based operation on a pattern rather than specifying exactly what is desired (as in IN) or spell out a range (as in BETWEEN). The syntax is as follows: SELECT "column_name" FROM "table_name" WHERE "column_name" LIKE {PATTERN} {PATTERN} often consists of wildcards. In SQL, there are two wildcards: % (percent sign) represents zero, one, or more characters. _ (underscore) represents exactly one character. More :: Certification Questions on SQL

Question 2

Javascript is interpreted by

Accepted Answer

JavaScript is an interpreted language, not a compiled language. A program such as C++ or Java needs to be compiled before it is run. The source code is passed through a program called a compiler, which translates it into bytecode that the machine understands and can execute.

Question 3

Which is more effective while calling the functions?

Accepted Answer

In the call by reference, it will just copy the address of the variable to access it, so it will reduce the memory in accessing it.

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