在MySQL中,schema和database是同义词. CREATE SCHEMA和CREATE DATABASE是等效的. 但是其他的数据库产品(几乎所有数据库)有所不同.在oracle数据库产品中,schema是database的一部分. 表示the tables and other objects owned by a single user.
This document is no longer actively maintained, for info on specific (new) users in recent product editions, please check the relevant product/feature documentation. Purpose ~~~~~~~ The following table lists the default usernames and passwords you ma
XData -–无需开发.基于配置的数据库RESTful服务,可作为移动App和ExtJS.WPF/Silverlight.Ajax等应用的服务端 源起一个App项目,Web服务器就一台,已经装了管理系统(ASP.NET Web MVC),因此要求App的服务端也采用微软.NET技术.经历(小试)了raw SQL.EF.最终采用了XData(斯人云:传来传去都是JSON,搞得那么复杂干嘛). 从Remoting到WCF再到ASP.NET Web API2,从RPC过渡到REST,构建Http
虽然可以依赖undo数据来查询row的旧版本数据,甚至可以执行逻辑恢复.但是你不能期待在undo中找到非常旧的数据.undo数据主要是用来提供读一致性. 在11G中,提供了Flashback Data Archive新特性,Flashback Data Archive可以自动存储表随着时间的推移发生的改变,时间的长度由用户决定.超过archive的保留期限,Flashback Data Archive会自动清除老的数据,但是不能修改Flashback Data Archive中的数据.Flash
Cross-domain security for data vault is described. At least one database is accessible from a plurality of network domains, each network domain having a domain security level. The at least one database includes at least one partitioned data table tha
Custom Diagrams https://github.com/dbeaver/dbeaver/wiki/Custom-Diagrams You can create custom ER diagrams that can contain any tables, relations and notes.However, even custom diagrams may contain only real existing database entities (tables). You ca
原文地址http://blog.sqlauthority.com/2009/09/07/sql-server-importance-of-database-schemas-in-sql-server/ SQL SERVER – Importance of Database Schemas in SQL Server Beginning with SQL Server 2005, Microsoft introduced the concept of database schemas. A sch
https://docs.oracle.com/cd/E26401_01/doc.122/e22952/T156458T659606.htm Table of Database Schemas in Oracle E-Business Suite Type Schemas Change Managed Description 1 SYS Y N Initial schema in any Oracle database. Owns the sql data dictionary. 1 SYS