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数据库大作业 - 百度文库

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ʼ Ƿ˳ Ա ˳ δ Ա״ ѻ ͨԱ λ ž ܾ ܾ칫 ҵ Դ ƻӪ ԱϢ ޸ ϵͳͼ

- 7 -

2.3ҵ

2.3.1ҵ

ϵͳԱԲšԱԼؿڵϢIJȣԱ½ϵͳѡҪеIJԲϢIJ롢¡޸ġɾѯԼԱϢɾIJ飬ȻʵֶԲԱϢͳƼ޸ģԱɶԼϢвԱϵͳIJ¼

ϵͳ

3.1ģṹ

Դϵͳһ͵ݿӦó塢¼ģ顢ϵͳ桢ϵͳģ顢Ϣģ顢¹ģ飬Ĺģ£

1ϵͳģ

ģҪǸ롢µ¼ 2Ϣģ

ģҪǶԲϢԱϢûϢְ͡͡Ļ̶ȡò͵Ƚá 3¹

¹ģҪԱǼǡԱϢ 3.2

ϵͳҪܷΪĸģ飺ԱáְáϵͳֹʵֵDzŹزţ幦¡

3.2.1ϵͳģϸ

3.2.2.1Ź

ͨݿʵŵIJ

- 8 -

Ÿ£ԲϢɾĺϢĸʵ֡

ɾԲϢģɾʵ֡

ãòŻԣ磺ϵ绰ϵַűšơŸ˵ȵȡ

ͨŵĹԱϢӦϢУʵ¹ȫԡ

3.2.2.2ϵͳ

ϵͳԱһЩϢáϵͳ־Աݻָݡʼݿ⡢

ϢãԲšְλְơ͹Ȩù

Ŀɾġ

ϵͳϵͳһá

ԱԱϢĹɾĵĹܡ

ݻָݣɶԱݽбݣڱҪʱлԭ ʼݿ⣺ݿϳʼIJ

- 9 -

3.2.2ϵͳģͼ

λ ҵ ˳ δ ѻ ˲ʲ Դ ϵͳ˳ Ա ͨԱ ž ܾ칫

3.4ݿ 3.4.1ݿ⽨ (1)ϵͳû

CREATE TABLE [dbo].[tb_userlogin](

[use_id] [int] NOT NULL, [use_name] [nchar](10) NULL, [use_pass] [nchar](20) NULL, [user_role] [nchar](10) NULL,

CONSTRAINT [PK_tb_userlogin] PRIMARY KEY CLUSTERED (

[use_id] ASC

- 10 -

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ʼ Ƿ˳ Ա ˳ δ Ա״ ѻ ͨԱ λ ž ܾ ܾ칫 ҵ Դ ƻӪ ԱϢ ޸ ϵͳͼ - 7 - 2.3ҵ 2.3.1ҵ ϵͳԱԲšԱԼؿڵϢIJȣԱ½ϵͳѡҪеIJԲϢIJ롢¡޸ġɾѯԼԱϢɾIJ飬ȻʵֶԲԱϢͳƼ޸ģԱɶԼϢвԱϵͳIJ¼ ϵͳ 3.1ģṹ

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