The System Catalog Schema 系统目录概要
schema control system [计] 模式控制系统
system conceptual schema 系统概念模型
database schema system 数据库系统
fire digital schema system 消防灭火数字预案系统
metadata schema registry system 元数据标准注册系统
Then, the dissertation designs the system schema in detail, including the hardware structure schema and the software structure schema.
接着文章详细的设计了系统方案，包括硬件结构方案和软件结构方案。
The PODS software maps those different schemas into a single, virtual schema for the entire system.
PODS 软件把这些模式映射为一个虚拟模式，供整个系统使用。
This section discusses how to access two types of system metadata: the category schema and the relationships.
这一部分介绍如何访问两类系统元数据：类别模式和关系。
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