ISO 19125-2:2004 地理学信息 简单特征通道 第2部分: SQL选项(选择权)
标准编号:ISO 19125-2:2004
中文名称:地理学信息 简单特征通道 第2部分: SQL选项(选择权)
英文名称:Geographic information — Simple feature access — Part 2: SQL option
发布日期:2004-08
标准范围
ISO 19125:2004的这一部分规定了一个SQL模式,支持通过SQL调用级接口(SQL/CLI)存储、检索、查询和更新简单的地理空间要素集合,并建立了实现要素表的架构。ISO 19125:2004的这一部分定义了体系结构中使用的术语。并定义了ISO 19107的简单特征配置文件。此外,ISO 19125:2004的这一部分描述了一组SQL几何类型以及这些类型上的SQL函数。所描述的几何类型和功能代表ISO 13249-3的轮廓。ISO 19125:2004的这一部分对几何图形的SQL类型的名称和几何定义以及几何图形的SQL函数的名称、签名和几何定义进行了标准化。ISO 19125:2004的这一部分并不试图标准化,也不依赖于在SQL环境中添加和维护类型的机制的任何部分,包括以下内容:为定义类型提供的语法和功能;为定义SQL函数提供的语法和功能;数据库中类型实例的物理存储;用于指代用户定义类型的特定术语,例如UDT。
This part of ISO 19125:2004 specifies an SQL schema that supports storage, retrieval, query and update of simple geospatial feature collections via the SQL Call Level Interface (SQL/CLI) and establishes an architecture for the implementation of feature tables.This part of ISO 19125:2004 defines terms to use within the architecture. of geographic information and defines a simple feature profile of ISO 19107. In addition, this part of ISO 19125:2004 describes a set of SQL Geometry Types together with SQL functions on those types. The Geometry Types and Functions described represent a profile of ISO 13249-3.This part of ISO 19125:2004 standardizes the names and geometric definitions of the SQL Types for Geometry and the names, signatures and geometric definitions of the SQL Functions for Geometry.This part of ISO 19125:2004 does not attempt to standardize and does not depend upon any part of the mechanism by which Types are added and maintained in the SQL environment, including the following:
- the syntax and functionality provided for defining types;
- the syntax and functionality provided for defining SQL functions;
- the physical storage of type instances in the database;
- specific terminology used to refer to User Defined Types, for example, UDT.
标准预览图


