java 什么是休眠注释类中使用的“目录”
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what is "catalog" used in hibernate annotated class
提问by
in java class i have seen
在我见过的java类中
@Table(name="user" , catalog="users"
for what purpose it is used
用于什么目的
采纳答案by Nilesh
From Wikipedia:
来自维基百科:
The database catalogof a database instance consists of metadata in which definitions of database objects such as base tables, views (virtual tables), synonyms, value ranges, indexes, users, and user groups are stored.
数据库实例的数据库目录由元数据组成,其中存储了诸如基表、视图(虚拟表)、同义词、值范围、索引、用户和用户组等数据库对象的定义。
Also, if your DB is MySQL, check this.
另外,如果您的数据库是 MySQL,请检查此内容。
Hope that helps.
希望有帮助。
回答by Daniel
Databases have different methods (or names for the same methods :) to organize its tables.
数据库有不同的方法(或相同方法的名称:) 来组织其表。
Some database place all tables in a different "schema", some in different "catalogs". In the attribute you can specify this.
一些数据库将所有表放在不同的“模式”中,有些放在不同的“目录”中。在属性中,您可以指定此项。