以其他方式修改数据库，包括添加、删除或修改索引或其他约束。

Changing the database in other ways, including adding, dropping, or modifying indexes or other constraints.

youdao

我所能获取的列太多，又很容易遗漏重要的结构化数据库特性，比如索引或空约束。

I can fetch too many columns, or leave off important structural database features, like indexes or null constraints.

youdao

昵称可以包含列、统计信息、索引或信息约束。

Nicknames can have columns, statistics, indexes, or information constraints.

youdao