Task 20 : The SOA approach

Within this document the SOA will be examined and explained in the context of the WebPA project. The first definition will be what SOA represents. From this discussion of the basic principles will be covered with regard to the guiding principles surrounding SOA to the specific architecture principles. From this point the available SOA technologies are identified and examined. The overall advantages and disadvantages of the system can be found in Appendix 2 – A Comparison of Web Service Technologies. One of the most important aspect of SOA to the WebPA project are the existing frameworks and specifications that can be utilised. This encompasses the relevancy of some of the ELF projects to WebPA. This document also covers the other considerations that must be taken into account with regard to SOA. Finally the document is concluded and the recommendations for the project are made. Through out the document a high number of acronyms and abbreviations are used. In most instances within the body of the document where an acronym is used it is explained at that point. However, to ensure that the reader can understand all acronyms a glossary is included in Appendix 1 – Glossary

Framework for implementing file systems in Windows NT

Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.Includes bibliographical references (p. 38-39).by Danilo Almedia.S.B.and M.Eng

Decentralized Access Control in Distributed File Systems

The Internet enables global sharing of data across organizational boundaries. Distributed file systems facilitate data sharing in the form of remote file access. However, traditional access control mechanisms used in distributed file systems are intended for machines under common administrative control, and rely on maintaining a centralized database of user identities. They fail to scale to a large user base distributed across multiple organizations. We provide a survey of decentralized access control mechanisms in distributed file systems intended for large scale, in both administrative domains and users. We identify essential properties of such access control mechanisms. We analyze both popular production and experimental distributed file systems in the context of our survey

Publishing RPC services

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.Includes bibliographical references (p. 67-68).by Peter Szilagyi.M.Eng

Delegating remote operation execution in a mobile computing environment

Remote operation execution is nowadays the most popular paradigm used to build distributed systems and applications. This success originates in the simplicity exhibited by programming along the client--server paradigm. Unfortunately, connectivity and bandwidth restrictions defy the unchanged porting of this well known mechanisms to the mobile computing field. In this paper we present an approach that allows to develop applications which are tailored for the specific requirements of mobile computing, while retaining the simple and well understood remote execution paradigm. The approach provides the additional benefit that established services could easily be used from mobile platforms. The cornerstone of our approach is integrated linguistic support for dynamically delegating the execution and control of remote procedure calls (RPC) to a delegate located on the fixed part of the network. Besides presenting the language constructs, we discuss the extensions to the RPC--based development process and the necessary run--time support

The secure file system under Windows NT

Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.Includes bibliographical references (p. 53-54).by Matthew Scott Rimer.M.Eng