数据库类型的相关内容

文章 2022-03-10 来自：开发者社区

Mybatis批量插入Oracle数据库数（包含BLOB类型）

一、映射字段类型有两种，我都是试过了，都可以用。//大文本字段private byte[] dwbzd; 法一：<result property="dwbzd" column="DWBZD" jdbcType="BLOB" typeHandler="org.apache.ibatis.type.BlobTypeHandler" /> 法二：<result property="d....

文章 2022-01-26 来自：开发者社区

【DBMS 数据库管理系统】数据库 -＞数据仓库 ( 数据处理类型 | 传统数据库 | 数据库不适用于分析型应用 )

文章目录一、数据处理类型二、传统数据库技术三、传统数据库不适用于分析型 ( DSS 决策支持系统 ) 应用原因四、事务性处理与分析型处理性能特性不同五、数据集成问题六、数据集成问题 : 数据分散原因七、数据集成问题 : 数据仓库引入八、数据动态集成问题九、历史数据问题十、数据综合问题一、数据处理类型数据处理类型 :① 操作型处理 : 又称为事务型处理 ;处理内容 : 与业务活动相关....

问答 2022-01-18 来自：开发者社区

Java 技术篇 - java同时连接多种数据库执行sql语句的兼容性验证，数据库类型包括：oracle、sqlserver、DB2、人大金仓、达梦、PG、瀚高、polardb

Java 操作多类型数据库下的兼容性验证第一章：数据库测试①【 oracle 数据库不支持分号】ORA-00933: SQL 命令未正确结束② 【sqlserver 数据库不支持 commit】COMMIT TRANSACTION 请求没有对应的 BEGIN TRANSACTION③ 【DB2 数据库不支持分号】SQLSTATE=42601, SQLERRMC=;;de....

问答 2021-12-14 来自：开发者社区

MySQL 数据库利用alter语句修改表字段属性实例演示，如何拓展表字段长度，sql语句修改表字段名称和类型

-- 创建表 create table field_changes ( name char); desc field_changes; 给表添加字段。alter table field_changes add code char(50); desc field_changes; 给表删除字段。alter table field_changes drop ....

问答 2021-12-14 来自：开发者社区

异地多活场景数据库解决方案中的COPY类型多活架构图是什么样的？

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