An authorization system for temporal data

Author

Gal, Avigdor ; Atluri, Vijayalakshmi ; Xu, Gang

Author_Institution

Fac. of Ind. Eng. & Manage., Technion-Israel Inst. of Technol., Haifa, Israel

fYear

2002

fDate

2002

Firstpage

339

Lastpage

340

Abstract

We present a system, called the Temporal Data Authorization Model (TDAM), for managing authorizations for temporal data. TDAM is capable of expressing access control policies based on the temporal characteristics of data. TDAM extends existing authorization models to allow the specifications of temporal constraints on data, based on data validity, data capture time, and replication time, using either absolute or relative time references. The ability to specify access control based on such temporal aspects were not supported before. The formulae are evaluated with respect to various temporal assignments to ensure the correctness of access control

Keywords

authorisation; client-server systems; database management systems; absolute time references; access control policies; authorization system; authorizations management; data capture time; data validity; relative time references; replication time; temporal characteristics; temporal constraints; temporal data; Access control; Authorization; Data engineering; Databases; Engineering management; Information management; Management information systems; Software libraries; Technology management; Web server;

fLanguage

English

Publisher

ieee

Conference_Titel

Data Engineering, 2002. Proceedings. 18th International Conference on

Conference_Location

San Jose, CA

ISSN

1063-6382

Print_ISBN

0-7695-1531-2

Type

conf

DOI

10.1109/ICDE.2002.994747

Filename

994747