What are the cost considerations for long-term data storage in columnar databases?

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what is columnar database Informational

• How do different columnar DBMS compare in terms of features and performance?
• How do columnar databases handle sparse data?
• Explain the impact of data locality on columnar database performance. How does columnar storage reduce I/O operations during query execution?
• Discuss the use of columnar databases in supply chain analytics.
• Explain the role of access control and authorization in columnar databases.
• Explain the different join algorithms that are optimized for columnar data layouts.
• How does the ability to process columns independently improve query parallelism?
• How does a columnar database differ from a row-oriented database? When is a columnar database a better choice than a row-oriented database?
• Discuss common performance bottlenecks in columnar databases and how to identify them.
• How might the convergence of analytical and transactional workloads influence the future of columnar databases?