Using Quotation Marks
Within quotation marks, owner is case sensitive. Quotation
marks instruct the database server to read or store the name exactly
as typed when you create or access a database object. For example,
suppose that you have a table whose owner is
Sam
.
You can use either one of the following two statements to access data
in the table: SELECT * FROM table1;
SELECT * FROM 'Sam'.table1;
The first query succeeds because the owner name is not required. The second query succeeds because the specified owner name matches the owner name as it is stored in the database.