ORA-02291是Oracle数据库中的一个错误代码,具体含义为“integrity constraint (<constraint>) violated - parent key not found”。这意味着尝试在数据库中执行一个操作(如插入、更新或删除),但这个操作违反了完整性约束,特别是外键约束。简单来说,就是尝试在一个表中插入或更新一个值,而这个值在另一个被引用的...
Constraints super control the data being entered into a table for permanent storage. In this paper we have to study the two types of data constraints that can be applied to data being inserted into an oracle table. 1). I/O constraint and 2). Business constraint.Ritu RajKirti Bhatia...
default, ORACLE allows any column to have a NULL value. Some business rules require that a data column must have value, and the NOT NULL constraint ensures that all rows of data in that column are valued. Cases: CREATE TABLE policies (policy_id NUMBER, Holder_name VARCHAR2 (40...
CheckConstraint(条件约束) 条件约束确保一个模型实例只有满足一定的规则条件后才被创建,不满足条件的数据不会存入到数据库。下例增加了一个对员工年龄的约束,只有大于18岁的才能 数据库完整型概念与完整性约束 什么是数据库完整性(DBIntegrity):数据库完整性是指DBMS应保证的DB的一种特性:在任何情况下的正确性、有...
Oracle数据库出现[23000][2291] ORA-02291: integrity constraint (SIMTH.SYS_C005306) violated异常 Buy me a cup of coffee ☕. 这个异常发生在往中间表中插入数据时,这时出现异常是因为关联的某个表没有插入数据,所以给没有插入数据的关联表插入数据,再给中间表插入数据此时异常就会解决。
关于这个错误,oracle官方解决方法是:Error: orA-02292: integrity constraint <constraint name> violated - childrecord found Cause: You tried to Delete a recordfrom a parent table (as referenced by a foreign key), but a record in the childtable exists. ...
ORA-02292: integrity constraint (CICRO.FK8A82499F4C67C41) violated - child record found 于是查看了相关的主键和约束关系,发现了一些问题。 关于这个错误,oracle官方解决方法是: Error: orA-02292: integrity constraint <constraint name> violated - child record found ...
ORA-28117:integrity constraint violated – parent record not found Cause:try to update/insert a child record with new foreign key values, but the corresponding parent row is not visible because of fine-grained security in the parent. Action:make sure that the updated foreign key values must als...
UNIQUE constrained all the non-null column values in table are unique PRIMARY KEY specifies a column to be a primary key A column with PK constraint is implicitly in: NOT NULL + UNIQUE PRIMARY KEY and NOT NULL can be used together, but the ...
在更新表的主键字段或DELETE数据时,如果遇到ORA-02292: integrity constraint (xxxx) violated - child record found 这个是因为主外键关系,下面借助一个小列子来描述一下这个错误: SQL> create table student 1. 2 ( 1. 3 id number, 1. 4 name nvarchar2(12), ...