什么叫LDAP,LDAP服务器是什么?
什么叫LDAP,LDAP服务器是什么
推荐回答(3个)
LDAP的英文全称是Lightweight Directory Access Protocol,一般都简称为LDAP。它是基于X.500标准的,但是简单多了并且可以根据需要定制。与X.500不同,LDAP支持TCP/IP,这对访问Internet是必须的。LDAP的核心规范在RFC中都有定义,所有与LDAP相关的RFC都可以在LDAPman RFC网页中找到。怎么使用LDAP这个术语呢?
在日常交谈中,你可能会听到有些人这么说:“我们要把那些东西存在LDAP中吗?”,或者“从LDAP数据库中取出那些数据!”,又或者“我们怎么把LDAP和关系型数据库集成在一起?”。严格地说,LDAP根本不是数据库而是用来访问存储在信息目录(也就是LDAP目录)中的信息的协议。更为确切和正式的说法应该是象这样的:“通过使用LDAP,可以在信息目录的正确位置读取(或存储)数据”。但是,也没有必要吹毛求疵,尽管表达得不够准确,我们也都知道对方在说什么。
LDAP是基于TCP/IP协议的目录访问协议,是Internet上目录服务的通用访问协议。LDAP的出现简化了X.500目录的复杂度,降低了开发成本,是X.500标准的目录访问协议DAP的子集,同时也作为IETF的一个正式标准。LDAP的核心规范在RFC中都有定义,所有与LDAP相关的RFC都可以在LDAPman RFC网页中找到。
从上述定义不难看出LDAP是一个目录,那么该目录是如何出现,有什么用呢?
在当今的信息世界,网络为人们提供了丰富的资源。随着网络资源的日益丰富,迫切需要一种能有效管理资源信息并利于检索查询的服务技术。目录服务技术随之产生。
1.LDAP目录服务可以有效地解决众多网络服务的用户账户问题。
2.LDAP目录服务规定了统一的身份信息数据库、身份认证机制和接口,实现了资源和信息的统一管理,保证了数据的一致性和完整性。
3.LDAP目录服务是以树状的层次结构来描述数据信息的,此种模型适应了众多行业应用的业务组织结构。
LDAP服务器也是用来处理查询和更新LDAP目录的。换句话来说LDAP目录也是一种类型的数据库,但是不是关系型数据库。不象被设计成每分钟需要处理成百上千条数据变化的数据库,例如:在电子商务中经常用到的在线交易处理(OLTP)系统,LDAP主要是优化数据读取的性能。
LDAP最大的优势是:可以在任何计算机平台上,用很容易获得的而且数目不断增加的LDAP的客户端程序访问LDAP目录。而且也很容易定制应用程序为它加上LDAP的支持。
差不多就是这个意思,写的很全面,不过像这个跟你说了,很专业,你要是没有系统的学习过,说了你也看不太明白吧
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