在分析地理空间实体变化及其与信息空间对象标识状态变化间关系的基础上, 设计了一套将地理空间实体变化映射到其信息空间对象标识状态变化的时空数据动态操作(包括12个动态操作)。这些动态操作包括了以前TGIS学者针对单个实体(对象)设计的所有动态操作, 并且通过其组合能够表达涉及多个地理空间实体的各种演变操作。最后在Oracle Spatial平台上, 用VC++实现了这套动态操作, 并以一个应用实例说明了这套动态操作在空间数据更新中的使用方法。这套时空数据动态操作的提出与实现为时空数据库的更新与维护奠定了基础

Dynamic operations change the state of object in Spatio-Temporal Database (STDB), which are the basic tools of STDB’s updating and maintenance, e.g., insert, delete, modify. In this paper, we argue that dynamic operations of STDB is a bridge linking the change processes in the real world and their representation in STDB, and a change in the real world has one and only one dynamic operation to deal with the operand. From the object-oriented STDB management point of view, the operand of dynamic operations is a single object; the mutation between entities should be realized by the dynamic operations of several objects. Based on this cognition, the changes of single geographic entities and the identity-based changes in STDB are studied at first, and a set of dynamic operations of STDB mapping the entities’change of the real world to their representation in STDB is presented, which include 12 dynamic operations. The mutation between several objects can be represented by a few operations in this set. All of these operations are implemented on Oracle objected-relational database, using Oracle’OO4O and VC6.0. We also use an example to illustrate how these Dynamic operations can be used to update STDB.