How to add Array of one entity while creating table in Oracle 11g Express Edition?

Question

I am trying to create a table in my data base with object publisher defined as

create type publisher as object
(  pname varchar(20),
   branch varchar(20)
)

and then a book object as

create type book as object(
title varchar(20),
pub_date date,
publisher publisher array[3],
keywordset varchar(20) multiset
)

and finally a table from book object as

create table Books of book

But, I am getting an error while creating object of book as follows

Error at line 4: PLS-00103: Encountered the symbol "ARRAY" when expecting one of the following:

:= . ( ) , @ % not null range default external character

2. title varchar(20),
3. pub_date date,
4. publisher publisher array[3],
5. keywordset varchar(20) multiset
6. )

Please help me resolve it.

Answer 1

You have to create an array sub type before using it. It should be outside the object. and i don't know why you are using MULTISET in their.

You can create equivalent table using following code.

 create type publisher as object
    (  pname varchar(20),
       branch varchar(20)
    )

    create type t_publisher as  varray(3) of publisher

    create type book as object(
    title varchar(20),
    pub_date date,
    publishr t_publisher,
    keywordset varchar(20)
    )


    create table Books of book