Execution Units FAQS

1. What is an Execution Unit?

• An Execution Unit is a specific task or operation represented by a blue box within an Execution Group. Each execution unit performs a part of the overall data processing task and can represent various operations, such as data extraction, transformation, or loading.

2. Where are Execution Units located?

• Execution units are located within execution groups (yellow boxes). All execution units within a single execution group are on the same physical data server, ensuring efficient parallel processing.

3. How do Execution Units differ from Execution Groups?

• Execution Groups are collections of execution units that are executed together within the same physical server. Execution units are the individual tasks inside the execution group that can be different in structure but run on the same server.

4. Can Execution Units have different structures?

• Yes, execution units within the same execution group may represent different data structures or operations. For example, one execution unit might extract data from one table, while another might load data into a different target.

5. What are the benefits of Execution Units within Execution Groups?

• Execution units within execution groups are executed in parallel on the same physical server, leading to faster processing times and efficient resource usage.

6. How are Execution Units represented in the diagram?

• In the physical diagram, execution units are displayed as blue boxes inside the yellow execution groups. Each blue box represents a specific task or operation that is part of the execution group.

7. Do Execution Units run sequentially or in parallel?

• Execution units within a single execution group run in parallel, as they are on the same physical data server. This parallel execution helps speed up data processing.

8. How does having Execution Units on the same physical server help performance?

• Since all execution units are on the same physical server, they can take advantage of the same server resources, minimizing delays caused by network or inter-server communication and maximizing processing efficiency.

9. Can I configure or modify Execution Units?

• Yes, execution units can be configured or adjusted based on your specific data processing needs. You can manage which tasks are grouped together within execution units for more efficient execution.

10. What happens if Execution Units are not optimized?

• If execution units are not optimized or properly grouped, the parallel execution could be less efficient, leading to delays, resource contention, and longer processing times.