Content And Multimedia Database Management Systems

A database management system is a general-purpose software system that facilitates the processes of defining, constructing, and manipulating databases for various applications. The main characteristic of the ‘database approach’ is that it increases the value of data by its emphasis on data independence. DBMSs, and in particular those based on the relational data model, have been very successful at the management of administrative data in the business domain. This thesis has investigated data management in multimedia digital libraries, and its implications on the design of database management systems. The main problem of multimedia data management is providing access to the stored objects. The content structure of administrative data is easily represented in alphanumeric values. Thus, database technology has primarily focused on handling the objects’ logical structure. In the case of multimedia data, representation of content is far from trivial though, and not supported by current database management systems

Domains, relations, and religious wars

In The Third Manifesto, C.J.Date attempts an OO reincarnation of the Relational Model. He claims that, were the Relational Model fully implemented, and particularly domains, it would provide all the functionality promised by OO systems, and more. So, he turns the lack of an adequate definition of domains/types into an implementers' fault. This paper looks backwards and review the evolution of the meaning given by the relational world, and particularly by C.J.Date himself, to the term domain on which the OO reincarnation attemp is based. Exercising memory can help understand the present and learn from past errors.Postprint (published version

Domains, relations, and religious wars

In The Third Manifesto, C.J.Date attempts an OO reincarnation of the Relational Model. He claims that, were the Relational Model fully implemented, and particularly domains, it would provide all the functionality promised by OO systems, and more. So, he turns the lack of an adequate definition of domains/types into an implementers' fault. This paper looks backwards and review the evolution of the meaning given by the relational world, and particularly by C.J.Date himself, to the term domain on which the OO reincarnation attemp is based. Exercising memory can help understand the present and learn from past errors