Question

what is wild card

Answer 1

it is a symbol that is used to represent the other characters in an expression.

Answer 2

wild card in sql: '%' i.e:

words in column = (jerry, ferry, marry, mary, john)

search for: %rr%
results-> jerry, ferry, marry

search for: j%
result-> jerry, john

search for: a%
result: ->

search for: %n
result-> john

CLEAR ENOUGH!! :)

Answer 3

A wild card means that you can use a symbol to take care of a wide variety of variables.

For example, * could mean "all" in the form of "Find ALL files"
? could mean 'any letter' in the form of "Find B?B", where it'd find files named BaB, BbB BcB BdB BeB BfB and so on.
# could mean 'any number', so a search would find "12" or "5" or "566432".

Answer 4

its a character that is used to substitute all other character ...... if u searching a file with unknown name of the format exe then u will search it as "*.exe"

Answer 5

Yes he is correct