DuckDB is a SQL OLAP database management system. Simple, feature-rich, fast & open source.
ERIC is an online library of education research and information, sponsored by the Institute of Education Sciences (IES) of the U.S. Department of Education.
国家法律法规数据库由全国人大常委会权威提供，收录宪法、法律、行政法规、监察法规、司法解释、地方性法规等法律文件，支持关键词检索、分类浏览和精确查询，是查询我国法律法规最权威、最全面的官方平台。
