What are some common tools or frameworks used for building batch processing pipelines?

  • Apache Beam, Apache Samza, Storm
  • Apache Kafka, RabbitMQ, Amazon Kinesis
  • Apache Spark, Apache Hadoop, Apache Flink
  • TensorFlow, PyTorch, scikit-learn
Common tools or frameworks for building batch processing pipelines include Apache Spark, Apache Hadoop, and Apache Flink. These frameworks offer distributed processing capabilities, fault tolerance, and scalability, making them suitable for handling large volumes of data in batch mode efficiently. They provide features such as parallel processing, fault recovery, and resource management to streamline batch data processing workflows.

Which of the following is an example of a data modeling tool used for designing database schemas?

  • ERWin
  • Microsoft Excel
  • Microsoft Word
  • MySQL Workbench
ERWin is an example of a data modeling tool used for designing database schemas. It allows data engineers to create visual representations of database structures, define relationships between entities, and generate SQL scripts for database creation.

The process of standardizing data units, formats, and structures across diverse data sources is known as ________.

  • Data Cleansing
  • Data Harmonization
  • Data Integration
  • Data Segmentation
Data Harmonization involves standardizing data units, formats, and structures across diverse data sources to ensure consistency and compatibility. It's crucial in creating a unified view of the organization's data.

In Dimensional Modeling, a ________ is a type of slowly changing dimension where all historical attributes are preserved.

  • Type 1 Dimension
  • Type 2 Dimension
  • Type 3 Dimension
  • Type 4 Dimension
In Dimensional Modeling, a Type 3 Dimension is a slowly changing dimension where only the most recent value is stored alongside historical values, preserving all historical attributes for analysis and reporting purposes.

Which of the following is NOT a component of a data governance framework?

  • Data modeling
  • Data quality management
  • Data security
  • Data stewardship
Data modeling is not typically considered a direct component of a data governance framework. While it plays a crucial role in database design and management, it is distinct from the governance processes focused on establishing policies, standards, and accountability for data management and usage.

Scenario: You are designing an ERD for a university database. Each student can enroll in multiple courses, and each course can have multiple students enrolled. What type of relationship would you represent between the "Student" and "Course" entities?

  • Many-to-Many
  • Many-to-One
  • One-to-Many
  • One-to-One
The relationship between "Student" and "Course" entities in this scenario is Many-to-Many, as each student can enroll in multiple courses, and each course can have multiple students enrolled, forming a many-to-many relationship.

________ is a technique used in ETL optimization to reduce the time taken to load data into the target system.

  • Aggregation
  • Data Masking
  • Denormalization
  • Incremental Load
Incremental load is a technique used in ETL optimization where only the changes or new data are loaded into the target system, reducing the time and resources required for data loading processes.

When designing a logical data model, what is the main concern?

  • High-level business requirements
  • Implementation details
  • Physical storage considerations
  • Structure and relationships between data entities
The main concern when designing a logical data model is the structure and relationships between data entities, ensuring that it accurately represents the business requirements at a conceptual level.

What is the purpose of data completeness analysis in data quality assessment?

  • To identify missing data values
  • To improve data accuracy
  • To optimize data storage
  • To remove duplicate records
The purpose of data completeness analysis in data quality assessment is to identify missing data values within a dataset. It involves examining each attribute or field to determine if any essential information is absent. By identifying missing data, organizations can take corrective actions such as data collection, imputation, or adjustment to ensure that the dataset is comprehensive and suitable for analysis. Ensuring data completeness is crucial for maintaining the integrity and reliability of analytical results and business decisions.

The integration of ________ in monitoring systems enables proactive identification and resolution of issues before they impact data pipeline performance.

  • Alerting mechanisms
  • Event-driven architecture
  • Machine learning algorithms
  • Real-time streaming
Alerting mechanisms play a vital role in monitoring systems by triggering notifications or alerts in response to predefined thresholds or conditions, allowing data engineers to proactively identify and address potential issues before they escalate and impact data pipeline performance. By integrating alerting mechanisms with monitoring systems, data engineers can stay informed about critical events in real-time and take timely corrective actions to ensure the reliability and efficiency of data pipelines.