COMan - Coexistence of Object-Oriented and Relational Technology

. Applying object-oriented technology to systems development is widely recognized as improving productivity and reducing system maintenance costs. At the same time, relational technology has gained leverage in most businesses. There exist already several proposals to combine object-oriented programming with relational database systems. Yet, existing approaches do not support necessary combinations of object-oriented and relational technology in concert, like reengineering of existing relational data in an object-oriented way, and adding persistence to existing object-oriented applications. COMan (Complex Object Manager) has been developed to fill this gap. The kernel architecture of COMan is based on a set of tables, called meta database, which supports the flexible mapping from a set of object classes to a relational schema and vice versa. Thus, COMan provides necessary infrastructure technology for business reengineering seeking important leverage of legacy databases. Keywords. Repo..

Authorization and Access Control in IRO-DB

The paper describes authorization and access control in the IRO-DB database system, a system supporting interoperable access between relational and object-oriented databases. The security policy developed is a federated, administrative discretionary access control policy which supports positive, negative, as well as implied authorization, includes a procedure for conflict resolution within the set of specified authorization rules, and concentrates on role-based security. 1 Introduction An increasing number of database applications need to work on data which are stored by using several different file systems or are spread over existing possibly heterogeneous databases. This has led to a lot of research and classifications in the field of heterogeneous database systems, database federations, multidatabases, and interoperable systems. A classification of federated database systems (FDBS) depending on the management of the federation is given in [15]. A federated database system (FDBS) co..

Authorization and Access Control in IRO-DB *)

The paper describes authorization and access control in the IRO-DB database system, a system supporting interoperable access between relational and object-oriented databases. The security policy developed is a federated, administrative discretionary access control policy which supports positive, negative, as well as implied authorization, includes a procedure for conflict resolution within the set of specified authorization rules, and concentrates on role-based security.

Microwave-enabled wearables: Underpinning technologies, integration platforms, and next-generation roadmap

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