Now that you have plotted out the design of your tables and learned how to create and manipulate them, it's time to put that knowledge to the test! Open up your database administraton GUI, and use the appropriate SQL Query Tool to write the SQL CREATE statement for your BOOK_TAGS table. You can either write the script manually and execute it through pgAdmin or you can create the table by using pgAdmin's wizard.
Afterwards, insert one row of dummy data that adds a tag to the sample book in the BOOKS table.
When you done, please upload your CREATE script. If you used the wizard to create your table, you can right-click on the table in the explorer window of pgAdmin and select Scripts > Create Script and it'll generate the code for you. Simply copy/paste it to a Text Editor like Notepad and save it with the .sql extension.