The process of defining policies, procedures, and standards for data management is part of ________ in a data governance framework.

  • Data Compliance
  • Data Governance
  • Data Quality
  • Data Stewardship
In a data governance framework, the process of defining policies, procedures, and standards for data management falls under the domain of Data Governance. Data governance encompasses the establishment of overarching principles and guidelines for managing data effectively across the organization. It involves defining rules and best practices to ensure data is managed, accessed, and used appropriately to support organizational objectives while maintaining compliance and mitigating risks.

The choice between data modeling tools such as ERWin and Visio depends on factors like ________.

  • Availability of training resources and online tutorials
  • Color scheme and user interface
  • Cost, complexity, and specific requirements
  • Operating system compatibility and file format support
The choice between data modeling tools such as ERWin and Visio depends on factors like cost, complexity, specific requirements of the project, and the availability of features required for the task.

What is the main objective of breaking down a large table into smaller tables in normalization?

  • Complicating data retrieval
  • Improving data integrity
  • Increasing data redundancy
  • Reducing data redundancy
Breaking down a large table into smaller tables in normalization helps reduce data redundancy by organizing data into logical groups, thereby improving data integrity and making the database easier to manage.

Apache Airflow allows users to define workflows using ________ code.

  • JSON
  • Python
  • XML
  • YAML
Apache Airflow allows users to define workflows using Python code. Python provides a powerful and flexible language for defining tasks, dependencies, and other workflow components in Airflow. By leveraging Python, users can express complex workflows in a concise and readable manner, enabling easier development, maintenance, and extensibility of Airflow workflows.

What are some best practices for managing metadata in a Data Lake?

  • Automated metadata extraction and tagging
  • Centralized metadata repository
  • Data catalog with search capabilities
  • Manual metadata entry and maintenance
Best practices for managing metadata in a Data Lake include maintaining a centralized metadata repository with a data catalog that offers search capabilities. This enables efficient discovery and understanding of available data assets, facilitating data exploration and analytics initiatives.

What is the primary goal of distributed computing?

  • Data storage optimization
  • Scalability
  • Sequential processing
  • Single point of failure
The primary goal of distributed computing is scalability, which involves efficiently handling increased workloads by distributing tasks across multiple interconnected nodes or computers. This approach allows for better resource utilization, improved fault tolerance, and enhanced performance compared to traditional centralized systems.

Which programming languages are supported by Apache Spark?

  • C++, Ruby, Swift
  • JavaScript, TypeScript
  • PHP, Perl, Go
  • Scala, Java, Python
Apache Spark supports multiple programming languages including Scala, Java, and Python, making it accessible to a wide range of developers and allowing them to work with Spark using their preferred language.

Scenario: Your team is considering adopting Apache Flink for real-time stream processing. How would you ensure high availability and fault tolerance in the Apache Flink cluster?

  • Deploying Flink in a distributed mode
  • Enabling job checkpointing
  • Increasing the number of task managers
  • Utilizing external monitoring tools
Enabling job checkpointing in Apache Flink is essential for ensuring high availability and fault tolerance. Checkpoints allow Flink to persist the state of the streaming application periodically, enabling recovery from failures by restoring the state to a consistent point in time. This ensures that processing can resume without data loss or duplication.

The process of transforming raw data into a structured format suitable for analysis is known as ________.

  • Data Aggregation
  • Data Integration
  • Data Mining
  • Data Wrangling
Data Wrangling is the process of cleaning, structuring, and enriching raw data to make it suitable for analysis. It involves tasks such as cleaning inconsistent data, handling missing values, and transforming data into a format usable for analysis.

________ is the process of combining data from multiple sources into a single, coherent view in Dimensional Modeling.

  • Data Aggregation
  • Data Consolidation
  • Data Federation
  • Data Integration
Data Integration is the process of combining data from various sources into a unified view, ensuring consistency and coherence in Dimensional Modeling. This step is crucial for building a comprehensive data model.