CASE STUDY 1

The goal of this case study is to give the reader an initial look at Python code that uses the gDS functionality.

The first 05:30 of this video presents a development environment capable of running the case study code on a Windows 11 system using an Ubuntu VM on VMware.

After that, we review the "animalFarm_01" example. The example features three tables — gCounty, gFarm, and gAnimal. See "animalFarm_01.dd". Farms cite the Counties they are located in. Animals cite the farms they exist on. The code creates a few Counties and Farms using straight-line calls to "insert row" routines. The example then spawns a number of processes. Each process inserts one animal into the gAnimal table under a system lock. After the processes are complete, the three tables are dumped onto the screen, and a short "report" is generated.