Designed and implemented a data pipeline to handle data ingestion, transformation, and querying across multiple database systems, including MongoDB and Cassandra. The project involved importing data from various formats, executing complex queries, and ensuring seamless data migration between databases. Key Details: Imported and managed JSON data in a MongoDB database. Queried and analyzed data within MongoDB using complex aggregation pipelines. Exported data from MongoDB to a CSV file. Imported and configured CSV data into a Cassandra database. Designed and executed CQL queries to analyze data within Cassandra. Created and optimized indexes to enhance query performance in Cassandra. Ensured data integrity and consistency across database systems. Tools Used: MongoDB: Data import, aggregation, and querying. Cassandra: Data import, CQL querying, and indexing. Tools: MongoDB CLI, Cassandra CLI, cqlsh.