The basic operation of Oracle database

1. Access Control statements

1.1 New tablespace

create tablespace ERP_TS
datafile 'D:\app\Administrator\oradata\orcl\erp.dbf'
size 100M
autoextend on
next 10M;

note:

1. ERP_TS table space name

2. datafile directory path for the installation directory path to the oracle

1.2 New User table space and associated

create user ERPUSER identified by zoudm default tablespace ERP_TS

1.3 assign permissions to users

grant dba to ERPUSER

2. DDL and DML statements

2.1 Create a table

create table EMP  (
   UUID                 NUMBER                          not null,
   USERNAME             VARCHAR2(15),
   PWD                  VARCHAR2(32),
   NAME                 VARCHAR2(28),
   GENDER               NUMBER,
   EMAIL                VARCHAR2(255),
   TELE                 VARCHAR2(30),
   ADDRESS              VARCHAR2(255),
   BIRTHDAY             DATE,
   DEPUUID              NUMBER,
   constraint PK_EMP primary key (UUID)
);

2.2 add comments to the table

comment on table EMP is '员工';

2.3 add comments to table fields

comment on column EMP.UUID is '编号';

2.4 Creating a sequence

CREATE SEQUENCE  "DEP_SEQ"  NOCACHE ;

Insert data 2.5

insert into DEP values (DEP_SEQ.NEXTVAL, '管理员组', '000000');

To be continued. . . . . .