In graph operators, what does the '+' operator signify?

The '+' operator in graph operators is used to select both parents and children of a selected model, facilitating the visualization and navigation of dependencies within a data model structure. This operator is particularly useful in dbt (data build tool) because it allows users to quickly understand the relationships and dependencies between different models in the workflow. By selecting both types of models, users can gain a comprehensive view of how one model interacts with others, which is essential for debugging, optimization, and enhancement of the data transformation process.

This means that when you use the '+' operator, you are effectively expanding your focus beyond a single model to include its immediate surrounding context within the broader data architecture. Each model is interconnected, and understanding both its upstream (parents) and downstream (children) connections is crucial for effective data management and analytics.