The Oracle Restful Data Services allow to "rest-enable" database objects like Tables, Views, Procedures and Functions.
This includes data-retrieval and data-manipulation. Using a few simple directives in the URL you can search for specific records, order the result set or even limit the amount of records retrieved. On top of that the ORDS will automatically show you the resulting JSON
The session focuses on the creation and use of autorest enabled services on objects. The creation section (1st half) focuses on the right format of your JSON result. The seconds half covers consuming these services; how to do CRUD operations, how to search the for data, how to paginate etc.

In my daily work a come across a lot of "bad code" people just do not know the features of the frameworks enough to maximise the benefits the offered features can have.
The session gives some examples on how to benefit to the max the use of out-of-the-box features provided by ORDS, how to implement them and subsequently use them from APEX.