As it turns out, PostgreSQL has a number of ways of storing loosely structured data — documents — in a column on a table.

• hstore is a data type available as a contrib package that allows you to store key/value structures just like a dictionary or hash.
• You can store data in JSON format on a text field, and then use PLV8 to JSON.parse() it right in the database.
• There is a native xml data type, along with a few interesting query functions that allow you to extract and operate on data that sits deep in an XML structure.

I will convert your Excel data into one of several web-friendly formats, including HTML, JSON and XML.

SLiP is a quick, alternative syntax for creating and editing XML data by hand and if you know Python, it should also be familiar.