XML files and tables

[mauede]

I have benn asked to write a Python program to parse XML files recorded in a database, look for specific keywords and sentences, extract the associated value and compare it with the correspondent value stored in tables.

I would greatly appreciate any code example, and tutorial dealing with:
• accessing a database
• reading an XML file
• extracting values associated to specific nodes in the XML file
• accessing data organized in a table whose rows ann columns have headers

Thank you in advance