Chan Chen Coding...

DB

数据库事务与隔离等级详解
     摘要: 事务(transaction)是数据库管理系统的执行单位,可以是一个数据库操作(如Select操作)或者是一组操作序列。事务ACID属性,即原子性(Atomicity)、一致性(Consistency)、隔离性(Isolation)、持久性(Durability)。  阅读全文

posted @ 2012-12-21 13:06 Chan Chen 阅读(453) | 评论 (0)  编辑

BLOBs and CLOBs
     摘要: solidDB® can store binary and character data up to 2147483647 (2G - 1) bytes long. When such data exceeds a certain length, the data is called a BLOB (Binary Large OBject) or CLOB (Character Large OBject), depending upon the data type that stores the information. CLOBS contain only "plain text" and can be stored in any of the following data types:  阅读全文

posted @ 2012-11-30 13:44 Chan Chen 阅读(321) | 评论 (0)  编辑

LDAP采用BDB作为后端数据库的理由

posted @ 2012-05-03 11:38 Chan Chen 阅读(932) | 评论 (0)  编辑

Make Auto Incrementing Field in MongoDB

posted @ 2012-04-14 01:11 Chan Chen 阅读(330) | 评论 (0)  编辑

SP

posted @ 2012-04-10 18:14 Chan Chen 阅读(192) | 评论 (0)  编辑

MySQL Auto Backup

posted @ 2012-03-21 17:43 Chan Chen 阅读(281) | 评论 (0)  编辑

MongoDB Admin Tool -- RockMongo Install for Ubuntu

posted @ 2012-03-18 15:54 Chan Chen 阅读(1862) | 评论 (0)  编辑

Indexes in MongoDB

posted @ 2012-02-27 14:34 Chan Chen 阅读(976) | 评论 (0)  编辑

Optimizing Object IDs

posted @ 2012-02-27 14:06 Chan Chen 阅读(248) | 评论 (0)  编辑

Five Reasons of Choosing MongoDB

posted @ 2012-02-24 22:12 Chan Chen 阅读(193) | 评论 (0)  编辑

MongoDB vs. RDBMS Schema Design

posted @ 2012-02-20 19:34 Chan Chen 阅读(379) | 评论 (0)  编辑

Mongo Metadata

posted @ 2012-02-19 16:47 Chan Chen 阅读(236) | 评论 (0)  编辑

Schema Design for MongoDB

posted @ 2012-02-18 15:58 Chan Chen 阅读(1083) | 评论 (0)  编辑

Basic Term of MongoDB

posted @ 2012-02-18 15:52 Chan Chen 阅读(208) | 评论 (0)  编辑

为什么要用非关系数据库?

posted @ 2012-02-18 15:48 Chan Chen 阅读(187) | 评论 (0)  编辑