Study the concept of XPath (expressions) in Yang and how they could influence the DB schema and query possibilities in the (REST) API and DB SPI.

• Breakdown data tree into elements with attributes
• Populate XPath for each element
• Consider how to store XPaths , elements and relations in database schema
• Use absolute or relative paths?
• Explain difference between XPath and XPath expressions

Resources:

• https://www.w3schools.com/xml/xpath_syntax.asp
• https://netopeer.liberouter.org/doc/libyang/master/howtoxpath.html
• https://events.static.linuxfound.org/sites/events/files/slides/YangBestPractices-ODL%20Summit%202015_v4.pdf
• https://www.yangvalidator.com/yangvalidator/validator