The ________ aspect of a data governance framework refers to the establishment of roles, responsibilities, and decision-making processes.

  • Organizational
  • Procedural
  • Structural
  • Technical
The procedural aspect of a data governance framework focuses on defining the processes, procedures, and workflows for managing data within an organization. This includes establishing roles and responsibilities, defining decision-making processes, and outlining procedures for data quality management, data security, and compliance. A robust procedural framework ensures that data governance policies are implemented effectively, leading to improved data quality, consistency, and reliability.

________ is a pattern that temporarily blocks access to a service experiencing a failure, allowing it to recover.

  • Circuit Breaker
  • Load Balancing
  • Rate Limiting
  • Redundancy
The Circuit Breaker pattern is a fault-tolerant design pattern used to manage failures in distributed systems. It temporarily blocks access to a service experiencing a failure, preventing cascading failures and allowing the service to recover. By detecting and isolating faulty components, the Circuit Breaker pattern promotes system stability and resilience, improving overall reliability and performance.

Scenario: You are designing an ERD for an online shopping platform. Each product can belong to multiple categories, and each category can have multiple products. What type of relationship would you represent between the "Product" and "Category" entities?

  • Many-to-Many
  • Many-to-One
  • One-to-Many
  • One-to-One
The relationship between "Product" and "Category" entities in this scenario is Many-to-Many, as each product can belong to multiple categories, and each category can have multiple products, forming a many-to-many relationship.

What distinguishes Apache ORC (Optimized Row Columnar) file format from other file formats in big data storage solutions?

  • Columnar storage and optimization
  • In-memory caching
  • NoSQL data model
  • Row-based compression techniques
Apache ORC (Optimized Row Columnar) file format stands out in big data storage solutions due to its columnar storage approach, which organizes data by column rather than by row. This enables efficient compression and encoding techniques tailored to columnar data, leading to improved query performance and reduced storage footprint. Unlike row-based formats, ORC allows for selective column reads, enhancing query speed for analytical workloads commonly found in big data environments.

Denormalization involves combining tables to ________ redundancy and improve ________.

  • Decrease, data consistency
  • Decrease, query performance
  • Increase, data consistency
  • Increase, query performance
Denormalization involves combining tables to increase query performance by reducing the need for joins, which can be resource-intensive. However, this may lead to data redundancy and decreased data consistency.

Scenario: Your team is dealing with a high volume of data that needs to be extracted from various sources. How would you design a scalable data extraction solution to handle the data volume effectively?

  • Centralized extraction architectures, batch processing frameworks, data silo integration, data replication mechanisms
  • Incremental extraction methods, data compression algorithms, data sharding techniques, data federation approaches
  • Parallel processing, distributed computing, data partitioning strategies, load balancing
  • Real-time extraction pipelines, stream processing systems, event-driven architectures, in-memory data grids
To design a scalable data extraction solution for handling high data volumes effectively, techniques such as parallel processing, distributed computing, data partitioning strategies, and load balancing should be employed. These approaches enable efficient extraction, processing, and management of large datasets across various sources, ensuring scalability and performance.

The use of ________ can optimize ETL processes by reducing the physical storage required for data.

  • Data compression
  • Data encryption
  • Data normalization
  • Data replication
The use of data compression can optimize ETL (Extract, Transform, Load) processes by reducing the physical storage required for data. It involves encoding data in a more compact format, thereby reducing the amount of disk space needed to store it.

What role does data stewardship play in a data governance framework?

  • Ensuring data compliance with legal regulations
  • Managing data access permissions
  • Overseeing data quality and consistency
  • Representing business interests in data management
Data stewardship involves overseeing data quality and consistency within a data governance framework. Data stewards are responsible for defining and enforcing data standards, resolving data-related issues, and advocating for the proper use and management of data assets across the organization.

What does a physical data model include that the other two models (conceptual and logical) do not?

  • Business rules and constraints
  • Entity-relationship diagrams
  • High-level data requirements
  • Storage structures and access methods
A physical data model includes storage structures and access methods, specifying how data will be stored and accessed in the underlying database system, which the conceptual and logical models do not.

Scenario: Your company needs to process large volumes of log data generated by IoT devices in real-time. What factors would you consider when selecting the appropriate pipeline architecture?

  • Data freshness, Cost-effectiveness, Programming model flexibility, Data storage format
  • Hardware specifications, User interface design, Data encryption, Data compression
  • Message delivery guarantees, Operational complexity, Network bandwidth, Data privacy
  • Scalability, Fault tolerance, Low latency, Data consistency
When selecting the appropriate pipeline architecture for processing IoT-generated log data in real-time, factors such as scalability, fault tolerance, low latency, and data consistency are crucial. Scalability ensures the system can handle increasing data volumes. Fault tolerance guarantees system reliability even in the face of failures. Low latency ensures timely processing of incoming data streams. Data consistency ensures the accuracy and integrity of processed data across the pipeline.

In a data warehouse, what is a dimension table?

  • A table that contains descriptive attributes
  • A table that contains primary keys and foreign keys
  • A table that stores metadata about the data warehouse
  • A table that stores transactional data
A dimension table in a data warehouse contains descriptive attributes about the data, such as customer demographics or product categories. These tables provide context for the measures stored in fact tables.

Apache Hive provides a SQL-like interface called ________ for querying and analyzing data stored in Hadoop.

  • H-SQL
  • HadoopSQL
  • HiveQL
  • HiveQL Interface
Apache Hive provides a SQL-like interface called HiveQL for querying and analyzing data stored in Hadoop. This interface simplifies data querying for users familiar with SQL.