1. Additional Topics

2. DDM Distributed Data Management files [ Type(*File) and Attr(DDMF)] –objects that represent files that exist on a remote system. For instance, if your customer file exists on a remote system, you can create a DDM file on the local system that specifically points to that customer file on the remote system. –DDM files provide an interface that lets you access the remote file just as if it were on your local system. Can compile programs using the file, read records, write records, and update records while the system handles the communications

4. DRDA Distributed Relational Database Architecture is an architecture that allows you to access data in a distributed relational database environment by using SQL statements in your applications. The architecture has been designed to allow distributed data access for systems in like and unlike operating environments. –This means that your applications can access data residing on homogeneous or heterogeneous platforms.

5. DRDA & SQL Structured Query Language (SQL)  the most common data access language for relational databases in the industry. SQL was chosen as part of DRDA because of its high degree of standardization and portability. Distributed environment, [you want to access data at remote locations]  the SQL requests are routed to the remote systems and they are executed remotely. Prior to sending the remote SQL request, a DRDA application must establish a connection with the remote relational database where the data is located. This is the purpose of the CONNECT SQL statement provided by DRDA