引言 概述 它只是又一个 ORM 引言 概述 Schema 描述了图中一个实体类型的定义，如 User 或 Group ， 并可以包含以下配置： 实体的字段 (或属性)，如：User 的姓名或年龄。 实体的边 (或关系)。如：User 所属用户组，或 User 的朋友。 数据库相关的配置，如：索引或唯一索引。 下面是 Schema ...

Use Cases What Presto Is Not What Presto Is Who uses Presto? Use Cases This section puts Presto into perspective so that prospective administrators and end users know what to...

Capture Capture One of the most important features of a shell is to be able to manipulate the standard I/O streams of programs. There are three main ways of doing so: pipes, re...

MLOnnx Example Methods __call__(self, model, task='default', output=None, opset=12) special MLOnnx Exports a traditional machine learning model (i.e. scikit-learn) to ON...

Communicate with the Panel Define methods on extensions and panels Send a message Communicate with the Panel In general, the interaction model is dominated by extension proces...

Use Cases What Presto Is Not What Presto Is Who uses Presto? Use Cases This section puts Presto into perspective so that prospective administrators and end users know what to...

Distributed SQL over TiKV TiKV is the storage layer for TiDB , a distributed HTAP SQL database. So far,we have only explained how a distributed transactional Key-Value database i...

Background Challenges Goal Application Scenarios Related References Background Security control has always been a crucial link of data governance, data encryption falls into...

Systemd kuma-cp kuma-dp Systemd It’s recommended to use a process manager like systemd when using Kuma on VMs. Here are examples of systemd configurations kuma-cp [ Unit ] ...

SYNC_DDL Query Option SYNC_DDL Query Option When enabled, causes any DDL operation such as CREATE TABLE or ALTER TABLE to return only when the changes have been propagated to...