Common Europe Congress 2021

Applications of today are made with heterogeneous components but runs in a homogeneous environment - How can that be done and can we do all that on a single IBM i? Of course !!

We will cover Microservices in Node.js, spring boot and Multithreaded RPG. Google integration using oAuth2 and redis. Everything runs with Nginx as the webserver. But no application without data so we will also cover noSQL and JSON in Db2 - and a lot of open source in general.

SQL is used for accessing data located in the database. But SQL is much more!
When embedding SQL in RPG we can decide between static (the final SQL Statement is known at compile time) and dynamic SQL (the final SQL Statement is not known before runtime).
The question is: When and how to use dynamic SQL and what to consider when using dynamic SQL?
Even though SQL is very powerful and we can profit from the features in RPG, there things that can be done easier with RPG!
So, the next question is: How can we use RPG in SQL?
Answer: By registering (RPG) programs and functions as Stored Procedures and User defined functions (UDF). External User Defined Table Functions (UDTF) are a little special, but once you have learned how to code them, you can use them for splitting data area contents into columns, read internally defined tables or consume user spaces populated by system APIs.

In this session you will learn when to use static and when to use dynamic SQL. You will get some tricks how to efficiently use dynamic SQL. Further you’ll learn how to register your RPG Functions as SQL Stored Procedures and User Defined Functions (UDF). Finally, you’ll get introduced in the use and coding of (external) User Defined Table Functions (UDTF).

We will discuss all of the components of a service program, including how to bind modules, binder source and using binding directories.  In addition, we will then compile the program, execute it in RDi debug mode and demonstrate the various functions of the RDi debugger.