The instance-based multilevel security model (IBMSM)
نویسنده
چکیده
The basic motivation of multilevel database systems is to share data from different security levels. However, current models have to rapidly store some information in different security levels to protect signal channel. Leakages could also occur when current models deal with the null values. In this research we propose a novel security model, the instance-based multilevel security model to solve the current problems. The proposed work includes defining the model, extending the SQL operation to the model and comparing the model with the current models in three areas, complexity, efficiency and reliability, and to point out the advantages of the proposed model in each area.
منابع مشابه
CAMAC: a context-aware mandatory access control model
Mandatory access control models have traditionally been employed as a robust security mechanism in multilevel security environments such as military domains. In traditional mandatory models, the security classes associated with entities are context-insensitive. However, context-sensitivity of security classes and flexibility of access control mechanisms may be required especially in pervasive c...
متن کاملQuerying a Multilevel Database: A Logical Analysis
This paper proposes a new formal model and semantics for answering queries in a multilevel polyinstantiated database. A polyinstantiated database may contain some contradict,ory facts distinguished by their classification. The main objective of this paper is then to provide the user cleared at a given level with a consistent and complete view of the multilevel database corresponding to his clea...
متن کاملDesigning an Integrated Multilevel Evaluation Model: A Case Study of the School Peer Counseling Program
This study sought to design a comprehensive evaluation model which can be utilized to evaluate educational programs with broad target populations and multiple management and executive layers, including the School Peer Counseling Program. This qualitative research had a descriptive design. Purposeful sampling method was used and the sample was non-randomly selected from the executive scientific ...
متن کاملA multilevel security model for a distributed object-oriented system
multilevel security, information flow, object model It often suggested that distributed computing will be the major trend in computer systems during the next decade. However, distributed systems are vulnerable to a number of security attacks. In this paper we look at the security problems of object-based distributed systems, and propose a model based on labeling for multilevel security. The pur...
متن کاملThe Entity-Relationship Model for Multilevel Security
A design environment for security critical database applications that should be implemented by using multilevel technology is proposed. For this purpose, the Entity-Relationship model is extended to capture security semantics. Important security semantics are defined and a language to express them in an ER model by means of security constraints is developed. The main contribution consists of th...
متن کامل