Answer / Neelima Sagar

Data analysts often face several challenges, including:
1. Data Quality Issues: Inconsistent, incomplete, or incorrect data can lead to inaccurate insights.
2. Data Security and Privacy Concerns: Protecting sensitive information while ensuring data access for analysis is a major challenge.
3. Scalability: Handling large amounts of data and performing complex analyses can be resource-intensive.
4. Data Integration: Combining data from various sources into a coherent form can be challenging due to differing formats, structures, and standards.
5. Interpreting Results: Translating analytical results into meaningful insights for decision-makers requires understanding of both the technical aspects and business context.

What is data cleansing?

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Mention what is the difference between an rdbms and hadoop?

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