摘要
sql server 2012能够方便的帮助用户实现数据的管理功能,保障了数据库中数据的有效性、正确性和相容性,提供给用户多种技术实现数据的完整性。比如约束、规则、外键和触发器。约束其实是通过对规则的完整性来实现数据的完整性目标,本文结合具体应用场景,主要对约束这一技术进行介绍。
SQL Server 2012 can easily help users to achieve data management functions,and ensure the validity,correctness and compatibility of data in the database,it provides users with a variety of technologies to achieve data integrity.For example,constraints,rules,foreign keys and triggers.Constraints are actually to achieve the goal of data integrity through the integrity of rules.This paper mainly introduces the technology of constraints combined with specific application scenarios.
作者
张卉
ZHANG Hui(Suzhou Higher Vocational and Technical School,Suzhou Jiangsu 215009;Suzhou Branch of Jiangsu Union Vocational and Technical College,Suzhou Jiangsu 215009)
出处
《数字技术与应用》
2018年第12期128-128,130,共2页
Digital Technology & Application
