Dear Oracle team,
I found the following issues when go through Database Concepts guide in Chapter - 2 [ Tables and Table Clusters ].
1. In the example section of Invisible columns topic, table name is provided incorrectly.
CREATE TABLE products ( prod_id INT, count INT INVISIBLE );
ALTER TABLE names products MODIFY ( count VISIBLE );
2. Employee id is given incorrectly in the Example 2-3 in Example of Create Table and Alter table Statements.
Employee id 104 does not exists in the Rows list displayed in Example 2-3.
Please correct me If I am wrong.