SLA-Based Guidelines for Database Transitioning

Component-based Software Engineering (CBSE) and Service-Oriented Architecture (SOA) became popular ways to develop software over the last years. During the life-cycle of a software system, several components and services can be developed, evolved and replaced. In production environments, the replacement of core components, such as databases, is often a risky and delicate operation, where several factors and stakeholders should be considered. Service Level Agreement (SLA), according to ITILv3’s official glossary, is “an agreement between an IT service provider and a customer. The agreement consists on a set of measurable constraints that a service provider must guarantee to its customers.”. In practical terms, SLA is a document that a service provider delivers to its consumers with minimum quality of service (QoS) metrics.This work is intended to assesses and improve the use of SLAs to guide the transitioning process of databases on production environments. In particular, in this work we propose SLA-Based Guidelines/Process to support migrations from a relational database management system (RDBMS) to a NoSQL one. Our study is validated by case studies.

Sofrimento psíquico: representações sociais dos enfermeiros em ambiente hospitalar

We believe that the dissatisfaction arising from the lack of belief in the possibilities of change in the workplace, which cause difficulties to achieve professional results in the professional psychological distress that currently fits into the context of mental health. This is a qualitative, descriptive and representational research aiming to discover how the professional nurses represent the very psychological distress from work in the hospital environment. Aided and supported by specific objectives of identifying factors that generates this suffering and strategies for defense and confronting these professionals in the hospital. 22 nurses participated in this research, officials of the University Hospital Onofre Lopes, located in the city of Natal / RN, with length of service in the institution more than one year and less than five, and they accepted, by signing the Term of Free and Informed Consent, participate in the study. We use plurimethodological approach: a questionnaire, a semi-structured interview and the design-story with a theme adapted from Trinca with the support of the Theory of Social Representations and that nurses do in their psychological distress of the Central Core. We reviewed the data from the results generated by the ALCESTE software, based on hierarchical categorization downward, leading seven classes used as categories: Work process: completeness vs. incompleteness; labor contradiction of the nurse; qualitative aspects of interpersonal relationships; hospital surveillance: Challenges, muteness and neglect; Expectations, conflicts and feelings in the work process; Leisure: the other side of the work process, and Suffering generating aspects of in the work process. We consider the analysis of quarters generated by the program, which SLQ houses in the central core of the representations; the SRQ and the DLQ the intermediaries elements and the DRQ the peripheral elements that nurses do in their psychological distress. We analytically adequate results in the three belonging dimensions of social representations: the Subjectivity, the Intersubjectivity and Trans-subjectivity. We infer that the interpersonal relationship, the extra work, the deviation in the role of nurse show themself as the factors responsible for psychological distress of it. In that sense, the central core of SR of this profession is based on the level of trans-subjectivity and understood as a Social Representation controversy