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Databasecheck
- 数据库完整性包含检查约束、缺省约束、唯一约束、非空约束、主键约束和外键约束等6种操作-Includes checking database integrity constraints, default constraints, the only constraint, not null constraints, primary key constraints and foreign key constraints and other six kinds of operations
CREATE-TABLE
- 表中某列被修改后触发器SQL例子，不能获得修改前的值。-CREATE TABLE [TEST] ( [FID] [int] IDENTITY (1, 1) NOT NULL , [F1] [int] NULL , [F2] [int] NULL , [F3] [int] NULL , CONSTRAINT [PK_TEST] PRIMARY KEY CLUSTERED
DB_CreateSql
- Access脚本编写器 1.0 功能: 可编写Access数据库的常用的主要对象,包括表,视图,索引,约束,包括 默认值,主键,自动编号,外键(表关系) 编写完自动保存为原数据库名+相应扩展的文件 Asp模式可直接生成带表单输入的可执行的Asp文件,用生成的Asp文件即可生成新的数据库 Sql模式可直接生成纯Sql语句文本-Access scr ipt to write 1.0 features: can write Access databases commonly u
hftsc123
- CREATE TABLE Activity ( activityno NUMBER NOT NULL , activityname VARCHAR2(20) NULL , activitytime DATE NULL , activityplace VARCHAR2(20) NULL , activitycost NUMBER(7,2) NULL , introductions LONG VARCHAR NULL , activityty
Database-integrity
- 掌握主键约束、外键约束及及check约束的用法；掌握默认值约束的应用；了解规则、触发器的使用。 -Master primary key constraint, foreign key constraints and check constraints usage master the application of the default value constraints understand the rules, the use of the trigger.
Kishore_Paper
- and split. Although this topological constraint may be reasonable in the segmentation of the liver, it would certainly be undesirable when segmenting blood vessels in an MR image. An algorithm to overcome these diculties was rst introduced by
SQL
- 在一个已经建立好的图书管理信息系统中，对读者中性别字段建立一个默认约束-For readers to create a default constraint gender field
shiyan6
- 数据库的完整性控制熟悉利用企业管理器为列创建DEFAULT约束、为列创建CHECK约束、为列创建UNIQUE约束、为列创建不允许为空约束、创建PRIMARY KEY约束、创建FOREIGN KEY约束-Integrity control of the database use Enterprise Manager to create the familiar column DEFAULT constraint, create a CHECK constraint for a column, cr
SQLQuery2
- 创建数据库 表的创建 修改 增添数据 约束 索引-Create Create a table of changes to add a data constraint index