Computer Science – Databases
Scientific paper
2009-01-15
Computer Science
Databases
45 pages, 18 figures, Submitted to ACM Transactions on Database Systems (TODS)
Scientific paper
We describe a new approach to data modeling, called the concept-oriented model (COM), and a novel concept-oriented query language (COQL). The model is based on three principles: duality principle postulates that any element is a couple consisting of one identity and one entity, inclusion principle postulates that any element has a super-element, and order principle assumes that any element has a number of greater elements within a partially ordered set. Concept-oriented query language is based on a new data modeling construct, called concept, inclusion relation between concepts, and concept partial ordering in which greater concepts are represented by their field types. It is demonstrated how COM and COQL can be used to solve three general data modeling tasks: logical navigation, multidimensional analysis and inference. Logical navigation is based on two operations of projection and de-projection. Multidimensional analysis uses product operation for producing a cube from level concepts chosen along the chosen dimension paths. Inference is defined as a two-step procedure where input constraints are first propagated downwards using de-projection and then the constrained result is propagated upwards using projection.
No associations
LandOfFree
Concept-Oriented Model and Query Language does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Concept-Oriented Model and Query Language, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concept-Oriented Model and Query Language will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-589807