To summarize the key points of the provided text in a single paragraph: Connecting a Go application to an SQLite database allows for storing and retrieving data using CRUD (Create, Read, Update, Delete) operations and SQL joins. The tutorial covers setting up the database connection, creating tables, performing CRUD operations, and executing SQL join queries. It also introduces key relational database concepts such as primary keys, foreign keys, indexes, and popular relational databases like PostgreSQL, MySQL, and SQLite. The example application demonstrates how to create a struct for storing student data, perform CRUD operations, and execute an inner join query between the students and courses tables.