What is the primary goal of ETL testing?
- Ensure data integrity and accuracy during the ETL process
- Validate only the transformed data
- Validate the source data
- Verify the data load speed
The primary goal of ETL testing is to ensure data integrity and accuracy during the entire ETL process. This involves validating the data at each stage, from extraction to loading, to ensure that the data meets the desired quality standards.
For continuous delivery, regression testing should be integrated into the ________ pipeline.
- Deployment
- Development
- Integration
- Monitoring
For continuous delivery, regression testing should be integrated into the Deployment pipeline. This ensures that any new changes do not introduce defects or issues in the production environment.
In ETL testing, __________ analysis is used to identify patterns that indicate anomalies.
- Correlation
- Pattern
- Statistical
- Trend
Analysis of patterns is crucial in ETL testing to identify anomalies. Detecting trends and correlations helps in understanding the data behavior, making it easier to spot irregularities during the testing process.
In ETL testing, what is the purpose of comparing source and target system data?
- To assess data quality
- To ensure data consistency
- To test data integrity
- To verify data completeness
Comparing source and target system data in ETL testing helps ensure data consistency between the original source and the destination after the ETL process. It validates that data has been accurately extracted, transformed, and loaded without loss or corruption, thereby maintaining data integrity and quality throughout the process.
________ is a methodology used in Data Warehousing to update data in a database incrementally.
- CDC (Change Data Capture)
- ETL (Extract, Transform, Load)
- OLAP (Online Analytical Processing)
- SQL (Structured Query Language)
Change Data Capture (CDC) is a methodology used in Data Warehousing to update data incrementally. It identifies and captures changes made to source data since the last update, reducing the processing load.
During ETL testing, ________ testing is performed to validate the metadata.
- Integration
- Metadata
- Regression
- Unit
During ETL testing, Metadata testing is performed to validate the metadata, ensuring that the information about data structure, relationships, and formatting is accurate and consistent.
In advanced BI integrations, what role does ETL play in ensuring data governance?
- Data Integration
- Data Migration
- Data Profiling
- Data Security
In advanced BI integrations, ETL plays a crucial role in ensuring data governance through data integration. ETL processes enforce data quality, consistency, and security, promoting governance by adhering to predefined rules and standards.
In ETL testing, comparing record counts and key aggregates between source and target is known as ________.
- Data Matching
- Data Profiling
- Data Reconciliation
- Data Validation
Data reconciliation involves comparing record counts and key aggregates between the source and target systems to ensure that the data is accurately transformed and loaded. It is an essential step in ETL testing.
________ plays a key role in managing and protecting sensitive data within an organization.
- Data cataloging
- Data encryption
- Data masking
- Data profiling
Data encryption plays a key role in managing and protecting sensitive data within an organization. It involves encoding data in a way that only authorized users can access and understand it, enhancing data security.
The use of ________ in data extraction helps in handling semi-structured data.
- Data Lakes
- Data Warehouse
- NoSQL databases
- XML
The use of NoSQL databases in data extraction helps in handling semi-structured data. NoSQL databases, such as MongoDB or Cassandra, are well-suited for accommodating flexible and varying data structures.