Multi-version Two-phase Locking Protocol Based on Commit-locking in Real-time Database

2011 ◽  
Vol 5 (11) ◽  
pp. 221-228
Author(s):  
Xiai Yan ◽  
Qiang Fan ◽  
Jinmin Yang ◽  
Boyun Zhang
Keyword(s):  
Real Time ◽  
Phase Locking ◽  
Two Phase ◽  
Locking Protocol ◽  
Real Time Database

ROLE-BASED SERIALIZABILITY USING ROLE ORDERING SCHEDULERS

2006 ◽  
Vol 07 (04) ◽  
pp. 437-450 ◽  
Author(s):  
TOMOYA ENOKIDO
Keyword(s):  
Access Control ◽  
Phase Locking ◽  
Control Model ◽  
Role Based Access Control ◽  
Access Control Model ◽  
Two Phase ◽  
The Subject ◽  
Locking Protocol ◽  
Access Rights ◽  
Role Based

In the role-based access control model, a role is a set of access rights. A subject doing jobs is granted roles showing the jobs in an enterprise. A transaction issued by a subject is associated with a subset of roles granted to the subject, which is named purpose. A method with a more significant purpose is performed before another method with a less significant purpose. We discuss which purpose is more significant than another purpose. We discuss two types of Role-Ordering (RO) schedulers SRO and PRO where multiple conflicting transactions are serializable in the significant order of subjects and purposes, respectively. We evaluate the RO schedulers compared with the traditional two-phase locking protocol in terms of throughput.

Sign in / Sign up

Export Citation Format

Share Document