Data Warehousing and Metadata Quiz

What is the primary purpose of metadata in data warehousing?

• To eliminate data processing

• To enhance data redundancy

• To provide context and descriptive details about data

• To store raw data

Which type of metadata provides information about data lineage and history?

• Structural Metadata

• Administrative Metadata

• Descriptive Metadata

• Statistical Metadata

What is a key characteristic of a data mart?

• It includes only historical data

• It contains enterprise-wide data

• It is designed for a specific business unit or department

• It is always larger than a data warehouse

Which of the following is a benefit of using data marts?

• Increased data redundancy

• Complex data management

• Cost-effective data analysis

• Slower query performance

What does vertical partitioning involve?

• Eliminating duplicate data

• Combining multiple tables into one

• Dividing data into smaller tables based on columns

• Dividing data into smaller tables based on rows

Which partitioning strategy distributes rows using a hash function?

• Composite Partitioning

• List Partitioning

• Range Partitioning

• Hash Partitioning

What is the main goal of horizontal partitioning?

• To improve data integrity

• To reduce the dataset size for queries

• To eliminate redundancy

• To combine multiple tables

Which of the following is a challenge of vertical partitioning?

• Simplified data management

• Improved query performance

• Increased complexity in queries

• Reduced memory usage

What is the primary benefit of normalization in data warehousing?

• Increased redundancy

• Improved data integrity

• Faster query execution

• Simplified data access

Which type of data mart is built directly from data sources?

• Hybrid Data Mart

• Centralized Data Mart

• Independent Data Mart

• Dependent Data Mart