身份认证与访问控制是信息系统防御主动攻击的主要安全机制。
Identity authentication and access control are the major security mechanisms to defend active attack.
DB 2提供了基于标签的访问控制(Label Based Access Control,LBAC)机制，从而进一步扩展了安全性。
DB2 further extends security by offering a Label Based Access Control (LBAC) mechanism.
一个关键的安全挑战就是要设计有效的访问控制机制。
A key challenge in Web services security is the design of effective access control schemes.
存取控制机制是保障数据库安全的一种主要手段。
Access control mechanisms are the principal way to protect data.
访问控制是信息安全中的一种重要保护机制。
Access control is an important protection mechanism for information security.
访问控制是信息安全中的一种重要保护机制。
Access control is an important protection mechanism for information security.
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