Abstract: A query language for spatiotemporal database is presented, which is named SQLST and SQL-compatible. The extended data types and operations of SQLST are discussed, as well as the SQLST-based spatiotemporal queries. It is also proved that SQLST is relational complete. SQLST is designed for the spatiotemporal data model STORM, but it can also be a reference for spatiotemporal extension to SQL.

摘要： 提出了一种与SQL兼容的时空数据库语言SQLST,着重论述了SQLST的数据类型与操作扩展、时空查询以及关系完备性。SQLST是基于时空数据模型STORM的时空数据库查询语言,但它可以作为SQL语言的时空扩展参考。

关键词: 时空数据库, 查询语言, 时空数据模型

CLC Number: 

• TP311.13