When you use a relational database, you need a way to track and organize your database schema evolutions. Typically there are several situation where you need a more sophisticated way to track your database schema changes: When you work within a team…

Recently researched about database SQL scripts auto management tools, recorded the results here. Researched 3 tools used a lot from internet surfing, as well as posts and blogs of other developers. DBdeploy http://dbdeploy.com/ This is a Ant plugin t…

1Z0-053 争议题目解析 Summary 题目NO. 题目解析链接地址 题库答案 参考答案 考查知识点  24 http://www.cnblogs.com/jyzhao/p/5319220.html  BCE  BCD  SQL Test Case Builder  25 http://www.cnblogs.com/jyzhao/p/5265330.html  D  CDE  Additional Flashback Operations  46 http://www.cnblogs.c…

根据OU官方发布的考试大纲,OCP 1Z0-053考点如下: 1. Database Architecture and ASM Describe Automatic Storage Management (ASM) Set up initialization parameter files for ASM and database instances Start up and shut down ASM instances Administer ASM disk groups 2. Config…

Bridge Pattern, Composite Pattern, Decorator Pattern, Facade Pattern, COR Pattern, Proxy Pattern, template Pattern, MVC. Updated with the explanation of Composite pattern, Decorator Pattern and Template Pattern. Design Pattern Interview Question - Pa…

overview Oracle's cost-based optimizer (COB) uses statistics to calculate the selectivity (the fraction of rows in a table that the SQL statement's predicate chooses) of predicates and to estimate the "cost" of each execution plan. The COB will…

Linux启动oracl.查看lsnrctl状态,然后启动监听start.sqlplus / as sysdba 启动数据库.conn sys/jxsrpv as sysdba .startup Administrator's Guide:基础,从建库到管理的大部分知识点Reference:包含数据库所有的初始化参数.数据字典视图以及动态性能视图SQL Reference:包含SQL语句的各种写法PL/SQL Packages and Type Reference:oracle内部自带的包,详细…

SQLite 游标(Cursor)相当于指向底层数据中结果集的指针,而不是提取和返回结果值的副本,是在结果集中对位置(行)进行控制的管理方式. moveToFirst:把游标移动到查询结果的第一行 moveToNext:把游标移动到下一行 moveToPrevious:把游标移动到前一行 getCount:返回结果集中的行数 getColumnIndexOrThrow:返回具有指定名称的列的索引 getColumnName:返回指定索引的列的名称 getColumnNames:返回当前游标中的所…

7.Managing Database Storage Structures 逻辑结构 数据库的存储结构有物理结构和逻辑结构组成的 物理结构:物理上,oracle是由一些操作系统文件组成的 SQL> select name from v$datafile; 如何更好的访问和管理这些文件以及文件中的数据呢? 必须使用逻辑方法,比如表就是一种逻辑方式逻辑结构:从逻辑上分,一个oracle数据库是由多个表空间组成的 表空间的作用:根据实际的需要,对物理文件进行分组,比如系统数据单独放到一个表空间中,用…

考试大纲共分9部分.   一.Server Configuration 服务器配置 1  Create the database 创建数据库 2  Determine and set sizing parameters for database structures 确定并设置数据库体系结构参数大小 3  Create and manage temporary, permanent, and undo tablespaces 创建并管理临时,永久,和撤销表空间 4  Stripe data fi…