Bachelor and Master Theses

Title: Logica SOA migration solution for Dutch nationwide Health Record System
Subject: Computer Science
Level: Advanced
Description: Abstract:
Electronic Healthcare Record (EHR) is a system that manages exchange of patient data between autonomous healthcare providers. The nationwide electronic health record (EHR) consists of a healthcare information broker (HIB) and all connected healthcare information systems with their local EHRs. Currently, the EHR system focuses on exchange of patient information and their medication overview only, however, Dutch ministry of health envisions exchanging more complex information such as X-rays files via EHR system as well. The architecture of the EHR is centralized and all patient data are exchanged through the HIB. Such
centralized architecture has the following major problems:
(1) The EHR system is currently monolithic as all the relevant functionalities including patient data management and authorization are realized in one large system. This makes EHR a bottleneck especially considering the future goals of EHR, namely, supporting voluminous radiology images.
(2) The current EHR is a single point of failure as all the data transformation and transactions
are carried out by EHR. This poses threats for availability and security. Obviously, both these two non-functional requirements are essential in Health record systems.
(3) In order to exchange information, the participant healthcare providers need to comply with messaging standards. The level of standardization, however, is not sufficient. This makes the agility of the system rather difficult. To address the problems above Logica considers migrating the existing EHR systems to service-
oriented architecture (SOA), as one of the main promises of SOA is flexibility, standardization and agility. In order to understand `how to perform migration’, Logica needs to determine `what activities are required’, `what types of knowledge is available’ and `what should drive the migration’. To support such decision making process, this assignment has the goal to define a comprehensive picture of the SOA migration problem space articulating the main migration issues and their related alternative solutions. Such problem space should also cover the constraints shaping the decisions regarding each migration issue.
To achieve this goal, the student candidates should draft a first description of the problem space (by studying EHS related documentation and literature), and then elicit the issues that
the target service-based system should address (by carrying out an interview survey among a set of crucial stakeholders representative of the parties mentioned above). To determine the possible migration solutions, the student needs to do a literature study (probably a systematic literature review). To create the problem space, the well-known pragmatic QOC design technique
will be considered. The resulting problem-space will be further assessed (by means of a workshop) by the relevant stakeholders.

Student candidate/s: Parisa Zahedi
Period internship: April 2011 - September 2011
Industrial partner: Logica BV, Karel de Smet,
Academic partner: VU University Amsterdam: Patricia Lago
Maryam Razavian
Company: VU Amsterdam, kontaktperson: Patricia Lago
Start date: 2011-04-01
Prel. end date: 2011-09-01
Presentation date: 2011-09-15
Student: Parisa Zahedi
IDT supervisor: Ivica Crnkovic, +46-21-103183

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