This was an important chapter that discussed the integration aspects of Spark and SQL. We have covered the main parts, namely Datasets and programmatic access. However, there are more capabilities, such as the JDBC/ODBC server for direct SQL queries. On the integration side, you will see more integration capabilities in Chapter 10, Spark with Big Data. Spark SQL will be getting more features in the future versions, and I think this will be one of the areas that will grow at a much faster pace.