Biblio

Increasing consumer experience and companies inner quality presents a direct demand of different requirements on supply chain traceability. Typically, existing solutions have separate data storages which eventually provide limited support when multiple individuals are included. Therefore, the block-chain-based methods are utilized to defeat these deficiencies by generating digital illustrations of real products to following several objects at the same time. Nevertheless, they actually cannot identify the change of products in manufacturing methods. The connection between components included in the production decreased, whereby the ability to follow a product’s origin reduced consequently. In this paper, a methodology is recommended which involves using a Block-chain in Supply Chain Traceability, to solve the issues of manipulations and changes in data and product source. The method aims to improve the product’s origin transparency. Block-chain technology produces a specific method of storing data into a ledger, which is raised on many end-devices such as servers or computers. Unlike centralized systems, the records of the present system are encrypted and make it difficult to be manipulated. Accordingly, this method manages the product’s traceability changes. The recommended system is performed for the cheese supply chain. The result were found to be significant in terms of increasing food security and distributors competition.

Despite the wide of range of research and technologies that deal with the problem of routing in computer networks, there remains a gap between the level of network hardware administration and the level of business requirements and constraints. Not much has been accomplished in literature in order to have a direct enforcement of such requirements on the network. This paper presents a new solution in specifying and directly enforcing security policies to control the routing configuration in a software-defined network by using Row-Level Security checks which enable fine-grained security policies on individual rows in database tables. We show, as a first step, how a specific class of such policies, namely multilevel security policies, can be enforced on a database-defined network, which presents an abstraction of a network's configuration as a set of database tables. We show that such policies can be used to control the flow of data in the network either in an upward or downward manner.