Replace every occurrence of the regular expression matching with a particular in VI editor?

suppose I have a text file as follows.

create table "kevin".tb1 {
col1,
col2
}
create table "jhone".tb2 {
col1,
col2
}
create table "jake".tb3 {
col1,
col2

}

I need to obtain that text file as follows by replacing every table owner name occurrences replace witha same name called “informix”.

out put should be like

create table "informix".tb1 {
col1,
col2
}
create table "informix".tb2 {
col1,
col2
}
create table "informix".tb3 {
col1,
col2
}

in vi editor ,

:%s/”kevin”/”informix”/g

I can replace them individually but I need to do all of them at once.

Answer

%s/(create table) "i+"/1 "informix"/

Explanation:

% — run through every line in the file
s/ — search and replace
(create table) — match the text and store it in the backreference 1
"i+" — match any number (more than 1) of identifier characters inside double quotes
1 "informix" — replace what is found with backreference 1 (text "create table"), a space and text "informix"