According to Databricks Apache Parquet is an open source, column-oriented data file format designed for efficient data storage and retrieval.It provides efficient data compression and encoding schemes with enhanced performance to handle complex data in bulk.Apache Parquet is designed to be a common interchange format for both batch and interactive workloads.It is similar to other columnar-storage file formats available in Hadoop, namely RCFile and ORC.(source: https://www.databricks.com/glossary/what-is-parquet).
InterSystems HealthShare is a healthcare informatics platform for hospitals, integrated delivery networks (IDNs) and regional and national health information exchanges (HIE). HealthShare includes health information exchange, data aggregation, workflow, text analysis, and analytics technology.

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