数据库课程设计-NBA球队信息管理系统

//导入数据并创立数据库
/*==============================================================*/
/* DBMS name:      Microsoft SQL Server 2008                    */
/* Created on:     2017/12/8 16:20:02                           */
/*==============================================================*/

create database nba
on
(name=nba_data,--数据文件的逻辑名称,注意不能与日志逻辑同名
filename='d:\sql_data\nba_data.mdf' ,--物理名称，注意路径必须存在
size=10,--数据初始长度为M
maxsize=50,--最大长度为M
filegrowth=5%)--数据文件每次增长%
log on
( name=nba_log, 
filename='d:\sql_data\nba_log.ldf ' , 
size=2 , 
maxsize=5 , 
filegrowth=1)
go
use NBA
go


if exists (select 1
   from sys.sysreferences r join sys.sysobjects o on (o.id = r.constid and o.type = 'F')
   where r.fkeyid = object_id('coach') and o.name = 'FK_COACH_RELATIONS_COACH')
alter table coach
   drop constraint FK_COACH_RELATIONS_COACH
go

if exists (select 1
   from sys.sysreferences r join sys.sysobjects o on (o.id = r.constid and o.type = 'F')
   where r.fkeyid = object_id('coach') and o.name = 'FK_COACH_TEACH_TEAM')
alter table coach
   drop constraint FK_COACH_TEACH_TEAM
go

if exists (select 1
   from sys.sysreferences r join sys.sysobjects o on (o.id = r.constid and o.type = 'F')
   where r.fkeyid = object_id('player') and o.name = 'FK_PLAYER_BELONGS T_TEAM')
alter table player
   drop constraint "FK_PLAYER_BELONGS T_TEAM"
go

if exists (select 1
   from sys.sysreferences r join sys.sysobjects o on (o.id = r.constid and o.type = 'F')
   where r.fkeyid = object_id('player') and o.name = 'FK_PLAYER_TRAINS_COACH')
alter table player
   drop constraint FK_PLAYER_TRAINS_COACH
go

if exists (select 1
   from sys.sysreferences r join sys.sysobjects o on (o.id = r.constid and o.type = 'F')
   where r.fkeyid = object_id('team') and o.name = 'FK_TEAM_TEACH2_COACH')
alter table team
   drop constraint FK_TEAM_TEACH2_COACH
go

if exists (select 1
            from  sysindexes
           where  id    = object_id('coach')
            and   name  = 'teach_FK'
            and   indid > 0
            and   indid < 255)
   drop index coach.teach_FK
go

if exists (select 1
            from  sysindexes
           where  id    = object_id('coach')
            and   name  = 'Relationship_3_FK'
            and   indid > 0
            and   indid < 255)
   drop index coach.Relationship_3_FK
go

if exists (select 1
            from  sysobjects
           where  id = object_id('coach')
            and   type = 'U')
   drop table coach
go

if exists (select 1
            from  sysindexes
           where  id    = object_id('player')
            and   name  = 'belongs to_FK'
            and   indid > 0
            and   indid < 255)
   drop index player."belongs to_FK"
go

if exists (select 1
            from  sysindexes
           where  id    = object_id('player')
            and   name  = 'trains_FK'
            and   indid > 0
            and   indid < 255)
   drop index player.trains_FK
go

if exists (select 1
            from  sysobjects
           where  id = object_id('player')
            and   type = 'U')
   drop table player
go

if exists (select 1
            from  sysindexes
           where  id    = object_id('team')
            and   name  = 'teach2_FK'
            and   indid > 0
            and   indid < 255)
   drop index team.teach2_FK
go

if exists (select 1
            from  sysobjects
           where  id = object_id('team')
            and   type = 'U')
   drop table team
go

/*==============================================================*/
/* Table: coach                                                 */
/*==============================================================*/
create table coach (
   cname                varchar(256)         not null,
   tname                varchar(256)         null,
   coa_cname            varchar(256)         null,
   cscore               float(10)            null,
   constraint PK_COACH primary key nonclustered (cname)
)
go

/*==============================================================*/
/* Index: Relationship_3_FK                                     */
/*==============================================================*/
create index Relationship_3_FK on coach (
coa_cname ASC
)
go

/*==============================================================*/
/* Index: teach_FK                                              */
/*==============================================================*/
create index teach_FK on coach (
tname ASC
)
go

/*==============================================================*/
/* Table: player                                                */
/*==============================================================*/
create table player (
   appearnum            float(10)            null,
   rebonds              float(10)            null,
   assists              float(10)            null,
   pscore               float                null,
   pname                varchar(256)         not null,
   cname                varchar(256)         null,
   tname                varchar(256)         null,
   constraint PK_PLAYER primary key nonclustered (pname)
)
go

/*==============================================================*/
/* Index: trains_FK                                             */
/*==============================================================*/
create index trains_FK on player (
cname ASC
)
go

/*==============================================================*/
/* Index: "belongs to_FK"                                       */
/*==============================================================*/
create index "belongs to_FK" on player (
tname ASC
)
go

/*==============================================================*/
/* Table: team                                                  */
/*==============================================================*/
create table team (
   twin                 float(10)            null,
   lose                 float(10)            null,
   cname                varchar(256)         not null,
   cname2               varchar(256)         null,
   constraint PK_TEAM primary key nonclustered (cname)
)
go

/*==============================================================*/
/* Index: teach2_FK                                             */
/*==============================================================*/
create index teach2_FK on team (
cname2 ASC
)
go

alter table coach
   add constraint FK_COACH_RELATIONS_COACH foreign key (coa_cname)
      references coach (cname)
go

alter table coach
   add constraint FK_COACH_TEACH_TEAM foreign key (tname)
      references team (cname)
go

alter table player
   add constraint "FK_PLAYER_BELONGS T_TEAM" foreign key (tname)
      references team (cname)
go

alter table player
   add constraint FK_PLAYER_TRAINS_COACH foreign key (cname)
      references coach (cname)
go

alter table team
   add constraint FK_TEAM_TEACH2_COACH foreign key (cname2)
      references coach (cname)
go

ER设计图

由ER图生成的物理模型图