In Sitecore I have created an alias called "bob" for a page.

For most items in Sitecore, the data is saved in the Items table in the database. You can easily see these if you search using the Item ID.
However whenever I search for an alias it returns no results:
select * from Items where ID ='0134A009-5D38-43C1-96C6-33C305543B7B'
Are aliases stored in a different location?
I have tried manually looking through all the tables and also ran a script which should search the whole database. If it is stored there then it looks like it is not in plain text.