# Show current rules
Both for basic components that QtQuick provides us which are then styled by qqc2-desktop-style,
，更多细节参见体育直播
**MUST** avoid including redundant comments which are tautological or self-demonstating (e.g. cases where it is easily parsable what the code does at a glance or its function name giving sufficient information as to what the code does, so the comment does nothing other than waste user time)
迁移中心支持常用数据库、数据仓库、对象存储、计算引擎及 OLAP 引擎等全栈数据源。通过统一接口与元数据映射，实现跨系统、跨架构的数据资产完整迁移，满足企业多样化上云需求。