Converting NUMBER column to boolean

[Serguei Cambour]

I discovered a strange behaviour when querying a table containing a column of type NUMBER:

Here is what I get when running a simple query to figure out column types:

select * from SYS.ALL_tab_COLUMNS where owner='SOME_OWNER' and table_name='MY_TABLE';

- DATA_TYPE: NUMBER

- COLUMN_NAME: OPENING_STORE

- DATA_LENGTH: 22

- DATA_PRECISION: 1

- DATA_SCALE: 0

- NULLABLE: Y

The values for OPENING_STORE column I get are either 0 or 1.

But when querying it with ActiveRecord:

store = StoreInfo.first
puts store.inspect

I get it as boolean: opening_store: false

#<StoreInfo id: 1, address: "Centre Commercial Englos les Géants", city: "Sequedin", country: "FRANCE", dir_first_name: nil, dir_last_name: nil, dir_signature: "Agathe, leader magasin", fax: nil, gps_x: 50.62806, gps_y: 2.9573769999999513, name: "Englos Sequedin", phone: "03 20 00 17 00", postal_code: "59320", region: "59 Nord", state: "null", store_id: "0070000100001", facebook_url: "https://www.facebook.com/decathlonsequedinenglos", web_site: "1", workshop: true, opening_store: false, mapregion_id: "FR-59", twitter_account: nil, store_reviews: true, ebooking_phone: nil, update_date: "2018-06-26 10:32:08", getting_here: "Zone commerciale Englos les Géants", address2: "avenue de la Boutillerie", display_contact_form: true, google_plus_account: nil, plus_kiosk_event_id: nil, store_size: nil, temporary_closed: "0", store_type: "DECATHLON", virtual_visit: nil>

Is it a normal behaviour for all the ActiveRecord objects or it is just Oracle specific one ?

Thank you.