如果对目标表定义了冲突，冲突表与诊断表将保留没有满足约束的行。
If the target table has violations defined, the violation table and diagnostic table hold the non-conforming rows that fail to satisfy constraints.
references为每个参照约束保持一个行db2select constname,tabname,refkeyname,reftabname,colcount,deleterule,updaterule from syscat . references。
Syscat.references Contains a row for each referential constraint db2 select constname, tabname, refkeyname, reftabname, colcount, deleterule, updaterule from syscat.references.
checks为每个表检查约束保持一个行db2select constname,tabname,textfrom syscat . checks。
Syscat.checks Contains a row for each table check constraint db2 select constname, tabname, text from syscat.checks.
constdep为其他对象上约束的每个依赖项保持一个行db2select constname,tabname,btype,bname from syscat . constdep。
Syscat.constdep Contains a row for each dependency of a constraint on some other object db2 select constname, tabname, btype, bname from syscat.constdep.
tabconst为每个唯一性(U)、主键(p)、外键(f)或者表检查(K)约束保持一个行db2select constname,tabname,typefrom syscat . tabconst。
Syscat.tabconst Contains a row for each unique (u), primary key (p), foreign key (f), or table check (k) constraint db2 select constname, tabname, type from syscat.tabconst.
COLCHECKS为表检查约束所引用的每个列保持一个行db2select constname,tabname,colname,usagefrom syscat.colchecks
SYSCAT.COLCHECKS Contains a row for each column that is referenced by a table check constraint db2 select constname, tabname, colname, usage from syscat.colchecks
最后发现其解决方式还是非常简单的(只需要100行Python代码)，它基于以下两个想法：约束传播和查找。
It turns out to be quite easy (about 100 lines of [Python] code) using two ideas: constraint propagation and search.
因此，我们需要两个约束：一个用于火车，另外一个用于士兵，正如我们在第 25行中看到的一样。
Therefore, we need two of them, one for trains and one for soldiers, as you can see on line 25.
在第35行上的合并成功了，因为该处没有发生任何约束冲突。
The merge becomes successful at line 35, because you don't violate any constraint there.
第22行到28行为每周的每天定义了一个约束。
Lines 22 through 28 define one constraint for each day of the week.
最后，第23到26行声明了这个问题的约束，这在前面已经讨论过了。
Finally, lines 23 through 26 declare the problem's constraints, discussed above.
第 23、24和25行上的约束也是类似地进行声明的。
The constraints on lines 23, 24, and 25 are declared in a similar way.
第15、16、17行定义了约束。
人若向耶和华许愿或起誓，要约束自己，就不可食言，必要按口中所出的一切话行。
When a man makes a vow to the LORD or takes an oath to obligate himself by a pledge, he must not break his word but must do everything he said.
纪律和规则不只是约束我们，而是在纠正我们的错误，培养我们的良好习惯，所以，我们要规范自己的一言一行。
The discipline and rules not only restrain us, but also correct our mistakes, and develop our good habits. So we have to regulate our behavior.
当最后一行到达时的约束：选中的
当想在第21行进行合并时，会得到结果0rowsmerged因为检查约束发生了冲突。
When you try to merge at line 21, you get the result 0 rows merged because the check constraint is violated.
第23行声明了所有这4种食品的约束。
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.
当将唯一约束附加到允许空值的列时，请确保在约束的列中最多有一行包含空值。
When you attach a unique constraint to a column allowing null values, you ensure that at most one row will have a null value in the constrained column.
利用这些规则，可以通过对无约束网络的不定导纳矩阵进行初等的行、列变换得到约束网络的导纳矩阵。
With the rules, the nodal admittance matrix can be obtained by simple row and column transformations in the unconstrained indefinite-admittance matrix.
索引是一种提供快速访问表行或强制某些约束的机制。
An index is a mechanism for providing fast access to table rows or for enforcing certain constraints.
由于无法保证规则运算式产生器一定会产生唯一的值，所以您不能使用它来填满具有唯一条件约束的使用者定义型别资料行。
Because the Regular Expression generator is not guaranteed to produce unique values, you cannot use it to fill a user-defined type column that has a unique constraint.
例如，如果您的资料库有一个资料行具有参考另一个资料行的检查条件约束，您可能会想要建立自订资料产生器。
For example, you might want to create a custom data generator if your database contains a column that has a check constraint that references another column.
检查条件约束可指定在资料表中为一或多个资料行所接受的资料值或格式。
A check constraint specifies the data values or formats that are acceptable in one or more columns in a table.
检查条件约束可指定在资料表中为一或多个资料行所接受的资料值或格式。
A check constraint specifies the data values or formats that are acceptable in one or more columns in a table.
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