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| Section | Weight | Objectives |
|---|---|---|
| Leveraging dbt State | 5% | - State management - State-aware operations |
| Managing Data Pipelines | 15% | - Deployment strategies - Pipeline orchestration - CI/CD integration |
| Debugging and Error Resolution | 15% | - Resolving data quality issues - Identifying modeling errors - Debugging techniques |
| Creating and Maintaining Documentation | 10% | - Generating documentation - Descriptions and metadata - Documentation standards |
| dbt Models Governance | 15% | - Naming conventions and standards - Project organization and structure - Version control integration |
| Developing dbt Models | 20% | - Model optimization
|
| Implementing dbt Tests | 10% | - Built-in tests - Test configuration and execution - Custom tests |
| External Dependencies | 10% | - Using packages - Managing snapshots - External sources integration |
>> 最新dbt Labs dbt-Analytics-Engineering題庫資訊 <<
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問題 #124
You're refactoring a complex dbt model and realize breaking it down into smaller models would improve readability. However, you're concerned about performance overhead due to the additional materializations. How would you address this concern?
答案：D
解題說明：
Don't optimize prematurely. Profiling lets you identify the most performance-critical parts of your model before changing materializations. The other options may help but targeted optimizations are key.
問題 #125
You debug a production issue by running a model in a testing environment with additional logging output. Which dbt features or command-line additions would facilitate this?
答案：A,B,C
解題說明：
These provide control during execution:A changes model behavior. B makes execution more sensitive. C alters dbt's log handling.
問題 #126
You want to configure dbt to prevent tests from running if one or more of their parent models is unselected.
Which test command should you execute?
Choose 1 option.
答案：C
解題說明：
The correct answer is A: dbt test --select "orders" --indirect-selection=empty".
In dbt, the --indirect-selection flag controls how dbt handles indirectly related resources during selection, such as tests whose parent models may or may not be selected. By default, dbt may include related resources depending on the selection behavior.
indirect-selection=empty is the strictest form of selection. It means that dbt will not run tests whose parent models are not explicitly selected, even if the tests are indirectly related. This prevents executing tests on models that you did not intend to build or include in your workflow, ensuring test execution is tightly scoped.
Other options behave differently:
* Option B (no indirect-selection flag) uses dbt's default behavior, which does include related tests, meaning tests could run even when their parent models were not selected.
* Option C: buildable includes resources that can be built (e.g., when downstream dependencies require them).
* Option D: cautious runs tests if their parents are selected transitively through dependencies.
Therefore, to prevent tests from running when parent models are unselected, you must use --indirect- selection=empty, making A the correct choice.
問題 #127
In development, you want to avoid having to re-run all upstream models when refactoring part of your project.
What could you do to save time rebuilding models without spending warehouse credits in your next command?
答案：D
解題說明：
The correct answer is B: Refer to a manifest and utilize the --defer and --state flags.
According to dbt's official documentation, the --defer flag enables developers to defer the resolution of model references (ref(), source()) to an existing manifest-commonly the one generated from a production run.
When this flag is used along with --state, dbt reads the prior project state and uses the already-built production models instead of rebuilding upstream dependencies. This is essential because production models are typically large and compute-intensive. By deferring to production artifacts, developers can test only the models they have modified, dramatically reducing warehouse costs and speeding up development cycles.
This approach is foundational to dbt's recommended development workflow, especially when working with CI
/CD or large DAGs. It preserves the integrity of the dependency graph while avoiding unnecessary recomputation.
Option A violates dbt best practices by removing dependency awareness. Option C is unnecessary operational overhead and does not integrate with dbt's state management. Option D is incomplete because --state alone does not prevent upstream model execution---defer is required to substitute those models with existing artifacts.
問題 #128
You need to test whether the values of a specific column have changed over time. What might be the best approach to implement this kind of test within your dbt project?
答案：A,B,C
解題說明：
A provides a clean comparison point C enables more complex historical analysis. D leverages built-in warehouse features, if you have them.
問題 #129
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