SQL Error: ORA-00904: : invalid identifier in creating table -


sql error: ora-00904

my code is:

create table vintagewine ( wine_id            varchar2(5)  not null, wine_name          varchar2(25) not null vintage_year       varchar2(4)  not null, employee_id        varchar2(6)  not null, constraint pk_vintagewine primary key(wine_id), constraint fk1-vintagewine foreign key(wine_name) references wine(wine_name), );

error:

error @ command line:8 column:14 error report: sql error: ora-00904: : invalid identifier 00904. 00000 -  "%s: invalid identifier" *cause:     *action:

i don't know what's wrong code. did dumb?

either constraint fk1-vintagewine illegal, or fk1-vintagewine must quoted, think. use underscore instead of hyphen.


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