A database schema denotes the description of the structure and behavior of a database. Straightforwardly, (database) schema evolution refers to changes of the database schema that occur during the lifetime of the corresponding database. It particularly refers to changes of schema elements already stored in the database. The information about a database schema is stored in the schema catalog. Da...

Building applications in a flexible and extensible manner is a key requirement in a database environment. We argue that adaptability and extensibility can be guaranteed by the utilizing the concepts meta-modeling, notion building and reflection, which require the use of repositories. We present an approach, in which domain knowledge and meta-framework are combined to produce extended meta-schem...

Background: Infant mortality is important as a standard indicator for the development of health, educational and social health systems in each country. Considering the fact that in different studies of the country there are different statistics on the prevalence of infant mortality in the intensive care unit and the general statistics on the prevalence of mortality in neonates in the country ar...

We describe a multimedia distributed databases system (mmdd) which manages associations of arbitrary renderable objects (such as text, 3D-graphics, sound, video, certain executables) using a hybrid object-oriented, relational database abstraction. Strengths include author-modi able schema, author-recon gurable front ends, and relatively straightforward extensibility to arbitrary media types and...

OBJECTIVE There is debate on how the methodological quality of clinical trials should be assessed. We compared trials of physical therapy (PT) judged to be of adequate quality based on summary scores from the Physiotherapy Evidence Database (PEDro) scale with trials judged to be of adequate quality by Cochrane Risk of Bias criteria. DESIGN Meta-epidemiological study within Cochrane Database o...

Will reading habit influence your life? Many say yes. Reading meta level control for deductive database systems is a good habit; you can develop this habit to be such interesting way. Yeah, reading habit will not only make you have any favourite activity. It will be one of guidance of your life. When reading has become a habit, you will not make it as disturbing activities or as boring activity...

Each Computer Aided Software Engineering (CASE) system provides support to a software process or specific tasks or activities that are part of a software process. Each meta-CASE system allows us to create new CASE systems. The creators of a new CASE system have to specify abstract syntax of the language that is used in the system and functionality as well as non-functional properties of the new...