This implies that the table must have one or more columns or table-level constraints.
这意味着表必须有一个或多个列级或表级约束。
A declarative programming style is almost always a more direct way of stating constraints than is an imperative or procedural one.
声明性编程样式在声明约束方面几乎一直比命令式或过程序样式更直接。
You would typically define one or more roles whose users would have the right the access the scripts depending on the security constraints specified in the web.xml file.
根据web. xml文件中指定的安全性约束，通常会定义一个或多个角色，这些角色的用户将拥有访问这些脚本的适当权限。
Validating a document's constraints, and providing this meaning to one or more XML documents, can be achieved easily by using SAX, the Simple API for XML (see Resources).
通过使用SAX (theSimpleAPIforXML)，可以容易地验证文档的约束并将该含意提供给一个或多个 XML 文档（请参阅参考资料）。
The data violated the integrity constraints for one or more columns.
数据违反了一列或多列的完整性约束。
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
未能启用约束。一行或多行中包含违反非空、唯一或外键约束的值。
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
未能启用约束。一行或多行中包含违反非空、唯一或外键约束的值。
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