ddl:
Data Definition Language is a subset of SQL to manipulate structural elements of a database, not the content of tables. CREATE, DROP, ALTER and related statements.
Data Definition Language is a subset of SQL to manipulate structural elements of a database, not the content of tables. CREATE, DROP, ALTER and related statements.
站内导航:
特别声明:169IT网站部分信息来自互联网,如果侵犯您的权利,请及时告知,本站将立即删除！