A time-series database for high-performance real-time analytics packaged as a Postgres extension

JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern

Free universal database tool and SQL client

Apache Doris is an easy-to-use, high performance and unified analytics database.

DataX集成可视化页面，选择数据源即可一键生成数据同步任务，支持RDBMS、Hive、HBase、ClickHouse、MongoDB等数据源，批量创建RDBMS数据同步任务，集成开源调度系统，支持分布式、增量同步数据、实时查看运行日志、监控执行器资源、KILL运行进程、数据源信息加密等。

DataX是阿里云DataWorks数据集成的开源版本。

What are the differences between the transaction isolation levels in databases? This is a suite of test cases which differentiate isolation levels.

A distributed transaction framework, supports workflow, saga, tcc, xa, 2-phase message, outbox patterns, supports many languages.