CAJ | 학술논문

数据完整性是确保数据库数据安全的重要研究内容。通过DML触发器技术实现数据完整性控制，可有效防止由于对数据进行频繁的更新操作从而导致数据丢失或无效扩散。该文通过论述DML触发器的实现机制，并结合具体的开发实例，分析DML触发器在强制数据参照完整性、级联更新与删除、实现用户定义业务规则、更新不可更新视图等方面的应用基本步骤及设计技巧，反映了触发器应用在提高系统性能、简化数据库操作、维护数据完整性、有效性、增强数据库安全性、提高开发效率等方面的强大功能。
수거완정성시학보수거고수거안전적중요연구내용。통과DML촉발기기술실현수거완정성공제，가유효방지유우대수거진행빈번적경신조작종이도치수거주실혹무효확산。해문통과논술DML촉발기적실현궤제，병결합구체적개발실례，분석DML촉발기재강제수거삼조완정성、급련경신여산제、실현용호정의업무규칙、경신불가경신시도등방면적응용기본보취급설계기교，반영료촉발기응용재제고계통성능、간화수거고조작、유호수거완정성、유효성、증강수거고안전성、제고개발효솔등방면적강대공능。
Data integrity is an important research to ensure the data security of an database. Data integrity controlled by DML triggers techonology can effectively prevent data from loss and meaningless proliferation during frequently updating. By illustrat?ing the DML trigger implemetation mechanism, combined with concrete development examples, the paper analyzes the basic ap?proach and design tactics of DML triggers application in enforcing data referential integrity, cascading updates and deletes, realiz?ing the user to define the business rules,updating not updatable views and other aspects . It reflects the powerful function of DML triggers in improving the system performance, simplifying database operations,maintaining database integrity and validity,enhanc?ing database security,improving development efficiency.