daft

Software · Sat Sep 01 00:00:00 EDT 2018

DOI:https://doi.org/10.11578/dc.20190516.1· OSTI ID:1513202 · Code ID:25600

Bush, Brian W. ^[1]; Hinkle, Jacob ^[1]

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1. National Renewable Energy Lab. (NREL), Golden, CO (United States)

Daft is a Haskell library that implements the key constructs of relational algebra via static structural typing. Its DataCube typeclass supports selection, projection, aggregation, disaggregation, natural joins, semijoins, and antijoins. Instances of DataCube include both map- and function-based representations. An additional abstract data type provides Vinyl-style, keyed relational tables for which an embedded domain-specific language compactly represents relational operations. Utility types and functions support serialization to tab-separated-value data files, JSON arrays, MongoDB documents, and PostgreSQL tables, including automatic detection and verification of the schema for the input data.

• Project Type: Open Source, Publicly Available Repository
• Site Accession Number: NREL SWR-17-53
• Software Type: Scientific
• License(s): MIT License
• Programming Language(s): Haskell
• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program

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  Primary Award/Contract Number:
  Other Award/Contract Number:

  AC36-08GO28308
• Code ID: 25600
• OSTI ID: 1513202
• Country of Origin: United States