Oracle表单非空，唯一，主键，外键，check,sequence.应用。

最新推荐文章于 2025-05-07 09:16:00 发布

最新推荐文章于 2025-05-07 09:16:00 发布 · 130 阅读

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#Oracle

本文详细介绍如何在Oracle数据库中创建表及相应的主键、唯一和外键约束，并提供了具体的SQL语句示例。

-- Create table

[size=xx-large]constraint A unique (ID)[/size]
create table ZHU
(
ZHUID NUMBER not null,
NAME VARCHAR2(33)
)
tablespace SYSTEM
pctfree 10
pctused 40
initrans 1
maxtrans 255
storage
(
initial 64K
minextents 1
maxextents unlimited
);
-- Create/Recreate primary, unique and foreign key constraints
alter table ZHU
add constraint PK2 primary key (ZHUID)
using index
tablespace SYSTEM
pctfree 10
initrans 2
maxtrans 255
storage
(
initial 64K
minextents 1
maxextents unlimited
);
alter table ZHU
add constraint ZHU_FK_FU foreign key (ZHUID)
references FU (ZHUID);
-- Create table
create table ZHU
(
ZHUID NUMBER not null,
NAME VARCHAR2(33)
)
tablespace SYSTEM
pctfree 10
pctused 40
initrans 1
maxtrans 255
storage
(
initial 64K
minextents 1
maxextents unlimited
);
-- Create/Recreate primary, unique and foreign key constraints
alter table ZHU
add [size=xx-large]constraint PK2 primary key (ZHUID)[/size] using index
tablespace SYSTEM
pctfree 10
initrans 2
maxtrans 255
storage
(
initial 64K
minextents 1
maxextents unlimited
);
alter table ZHU
add [size=x-large]constraint ZHU_FK_FU foreign key (ZHUID)
references FU (ZHUID);[/size]