Convert DTA to JSONL

DTA is the native binary data file format for Stata, a statistical analysis package widely used in economics, epidemiology, and social science research. It stores complete datasets along with variable labels, value labels, missing value indicators, and display formats that preserve the full analytical context. DTA files can contain millions of observations and thousands of variables, making them suitable for large survey and panel datasets.

JSONL (JSON Lines, also known as NDJSON) stores one complete, valid JSON object per line in a plain-text file. This line-by-line structure makes it ideal for streaming large datasets, log files, and machine learning training data, since each record can be processed independently without loading the entire file into memory. JSONL is increasingly standard in data engineering, LLM training pipelines, and high-throughput logging systems.