Alright, first things first, log into Xano. Once you're in, head over to the database section on your Xano dashboard. You'll find it on the left-hand side. In the database section, look for the 'Add New Table' button. Click it to get started on creating a new table. Now, give your table a name that makes sense for the data it will hold. Then, define the fields for your table. This means you'll need to specify the field names and types. Next up, set the primary and foreign keys. The primary key is a unique identifier for each record. The foreign key links to the primary key of another table, creating a connection between the two tables. To set a primary key, just click the 'primary' tick box when defining a field. For a foreign key, define a field as 'foreign key' and choose the table and field it links to. Once you've got all your fields and keys set, click the 'Create table' button to save your new table. If you've got multiple tables, you'll need to define the relationships between them. Head to the 'Relationships' section in the database area. Here, you can set up how your tables relate to each other, like one-to-one, one-to-many, or many-to-many relationships. After defining your schema, save your changes. Now, you can test your relational database schema by adding some data and running queries to make sure everything works as expected.