git: https://github.com/qubole/quark
参考引文
[1]https://finance.yahoo.com/news/qubole-open-sources-quark-sql-130000472.html
[2]https://adtmag.com/articles/2016/04/06/sql-big-data.aspx
Quark is a data virtualization engine over analytic databases
Quark, a cost-based SQL optimizer that helps to simplify and optimize access to data for data analysts, a SQL optimizer that manages relationships among tables in an organization's databases, allowing for queries to span structured and unstructured data stores.
(1)Traditionally, the data sets generated by data teams are aggregated and copied to multiple analytics systems to balance performance and cost, making it near impossible to query the data in a way that can quickly inform business decisions.Quark simplifies and optimizes access to data by managing relationships between tables across an organization's databases
(2)Quark models relationships between datasets using well-known database concepts like materialized views and OLAP cubes, enabling data analysts to automatically take advantage of the fastest and most efficient data set for their queries.
