$1.$How does power pivot enhance data analysis and reporting capabilities within excel compared to traditional pivot table?

$2.$ Steps to create and manage relationships between different tables in Power pivot to create a comprehensive data model?

$3.$ How to import data from an excel file to power pivot?

$4.$ What are the key steps to ensure data integrity and accuracy when setting up one to many relationships in excel using data model feature?

$5.$ How to established one to many relationship between teo tables in power pivot to link a customers table with a orders table?