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Full-Text Articles in Computer Sciences
S2st: A Relational Rdf Database Management System, Anthony T. Piazza
S2st: A Relational Rdf Database Management System, Anthony T. Piazza
Theses and Dissertations - UTB/UTPA
The explosive growth of RDF data on the Semantic Web drives the need for novel database systems that can efficiently store and query large RDF datasets. To achieve good performance and scalability of query processing, most existing RDF storage systems use a relational database management system as a backend to manage RDF data. In this paper, we describe the design and implementation of a Relational RDF Database Management System. Our main research contributions are: (1) We propose a formal model of a Relational RDF Database Management System (RRDBMS), (2) We propose generic algorithms for schema, data and query mapping, (3) …
Evaluation Of Windows Servers Security Under Icmp And Tcp Denial Of Service Attacks, Hari Krishnea Vallalacheruvu
Evaluation Of Windows Servers Security Under Icmp And Tcp Denial Of Service Attacks, Hari Krishnea Vallalacheruvu
Theses and Dissertations - UTB/UTPA
Securing server from Distributed denial of service (DDoS) attacks is a challenging task for network operators. DDOS attacks are known to reduce the performance of web based applications and reduce the number of legitimate client connections. In this thesis, we evaluate performance of a Windows server 2003 under these attacks. In this thesis, we also evaluate and compare effectiveness of three different protection mechanisms, namely SYN Cache, SYN Cookie and SYN proxy protection methods, to protect against TCP SYN DDoS attacks. It is found that the SYN attack protection at the server is more effective at lower loads of SYN …