This paper proposes a new and efficient method to represent, store and retrieve structured documents from object-relational databases. Its main contribution consists of a codification scheme for document structures that assigns codes to documents as an additional attribute. Thus, retrieval conditions on the structure of documents can be evaluated by applying these codes, avoiding traversing obj...

There are a lot of difficulties in the ontology generation from relational database such as unclear generation approaches, un-unified ontology languages and so on. So in order to provide unified ontology and improve the quality of ontology generation, approach proposed in this paper firstly extracts database metadata information from relational database using reverse engineering technique, and ...

This paper is about Kripke structures that are 1. inside a relational database. 2. queried with a modal language. At first the modal language that is used is introduced, followed by a definition of the database and relational algebra. Based on these definitions two things are described: 1. a mapping from components of the model structure to a relational database schema and instance. 2. a transl...

Relational database management systems have been widely used in industry for many years. Although there has been much research done for developing object-oriented database systems recently, it is believed that relational database systems will still dominate the market for many years. On the other hand, object-oriented programming languages become more acceptable by software developers. It is th...

Relational database management systems have been widely used in industry for many years. Although there has been much research done for developing object-oriented database systems recently, it is believed that relational database systems will still dominate the market for many years. On the other hand, object-oriented programming languages become more acceptable by software developers. It is th...

Comparison of Relational Database and Object Oriented. Database This report presents the comparison between object oriented database and relational. The difference is mostly in the way the database is used. The difference is Object-Relational data modeling supports some objectoriented concepts, while still. Semantic overloading: No mechanism to distinguish between entities and Very influenced b...

Graph analytics is becoming increasingly popular, with a deluge of new systems for graph analytics having been proposed in the past few years. These systems often start from the assumption that a new storage or query processing system is needed, in spite of graph data being often collected and stored in a relational database in the first place. In this paper, we study Vertica relational databas...

The market trends indicate that the next generation database technology will be dominated by object-relational systems. This shift to the new technology calls for visual modeling techniques to facilitate the design of object-relational database systems. Even though Unified Modeling Language (UML) is not currently equiped to manage this task, it can be extended for it.The paper defines design co...

The relational database model has been proven to be a very useful model in database management systems and has been widely applied [4]. The inherence of the relational database model is effective for precise and unambiguous data. However, realworld applications often involve incomplete information. In this study, a logical fuzzy relational database model was proposed to accommodate incomplete i...