Explain the role of data catalogs in managing data stored in columnar databases.

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what is columnar database Informational

• Explain the role of bloom filters in columnar databases. How do zone maps improve query performance in columnar databases?
• How does columnar storage affect the performance of different types of database workloads? When is a predominantly columnar database design not the optimal choice?
• What are the licensing considerations for commercial columnar databases?
• Discuss the factors that contribute to the overall cost, including software licensing, hardware requirements, and operational expenses.
• Discuss the benefits and challenges of using cloud-based columnar database services.
• What are the advantages of using a cloud-based columnar database? What are the challenges of using a cloud-based columnar database?
• Discuss the ethical considerations related to the storage and analysis of data in columnar databases. Explain the concept of data retention policies in the context of columnar databases.
• Discuss the performance considerations when visualizing large datasets from a columnar database.
• How can columnar databases help energy companies manage their resources and infrastructure more efficiently? Discuss the use of columnar databases in transportation and logistics.
• How do columnar databases handle data updates and deletes efficiently?