Multi-Source Data Aggregation and Transformation Pipeline

Create a flexible Bash data processing script that can aggregate, transform, and normalize data from multiple sources. The script should: 1) Support CSV, JSON, and XML input formats, 2) Perform complex data transformations, 3) Handle large datasets efficiently, 4) Implement data validation and cleaning, 5) Generate standardized output formats, 6) Provide detailed error logging, and 7) Support parallel processing. Include mechanisms for handling malformed data, configurable transformation rules, and integration with data analysis tools.