oracle数据库的相关内容

文章 2022-09-20 来自：开发者社区

oracle学习64-oracle之数据处理之其他数据库对象

--创建序列 create sequence empseq increment by 10---每次增长10 start with 10--从10开始 maxvalue 100--提供最大值 cycle --循环 nocache --不需要缓存登录运行结果--查看查看 select empseq.nextval from dual运行结果--创建表 create table emp11 as ....

文章 2022-09-20 来自：开发者社区

oracle学习63-oracle之数据处理之其他数据库对象练习

1. 创建序列dept_id_seq，开始值为200，每次增长10，最大值为10000 a) create sequence dept_id_seq b) start with 200 c) increment by 10 d) maxvalue 10000 2. 使用序列向表dept中插入数据 a) insert into dept01 b) values(dept_id_se...

文章 2022-09-19 来自：开发者社区

oracle学习46-图解oracle数据库

文章 2022-09-19 来自：开发者社区

oracle学习45-关系数据库

关系数据库关系模型定义：以二维表的形式表示实体和实体之间联系的数据模型称为关系数据模型。从模型的三要素角度看，关系模型的内容为：（ 1 ）数据结构：一张二维表格。（ 2 ）数据操作：数据表的定义，检索、维护、计算等。 &...

文章 2022-09-19 来自：开发者社区

oracle学习44-数据库发展历史

数据库发展历史数据库技术从 20 世纪 60 年代开始到现在一共经历了三个发展阶段：  第一代是网状、层次数据库系统网状：通用电气公司 Bachman 等人在 1961 年开发成功的 IDS 层次： IBM 公司在 1968 年开发的 IMS第二代是关系数据库系统第三代是以面向对象数据模型为主要特征的数据....

文章 2022-09-19 来自：开发者社区

oracle学习37-rman备份-数据库指定文件恢复

.数据库指定数据文件恢复启动数据库的时候报错ORA-01157: cannot identify/lock data file 5 - see DBWR trace fileORA-01110: data file 5: 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\DOCARE\AP MEDCOMM.DBF'ORA-27041: unable to open file ....

问答 2022-09-16 来自：开发者社区

请教下flink oracle cdc支持oracle exdata一体机上的数据库吗？

之前用streamset的时候就是不支持一体机，不知道flink cdc是否支持？

问答 2022-09-07 来自：开发者社区

flink cdc oracle 同步可拔插数据库oracle 12不成功怎么办？

flink cdc oracle 同步可拔插数据库oracle 12不成功，报错：Error Msg = ORA-65040: 不允许从可插入数据库内部执行该操作

问答 2022-09-06 来自：开发者社区

实时抽取oracle 报错了，数据库检查时正常的，请帮忙分析下问题

文章 2022-09-01 来自：开发者社区

oracle 数据库逻辑备份命令

create or replace directory exp as '/oraexport';alter user system identified by oracle;expdp system/oracle directory=exp full=y dumpfile=9501bak.dmp logfile=9501bak.log expdp system/oracle directory.....

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