Multimedia documents with elastic time
Proceedings of the third ACM international conference on Multimedia
An object-oriented multimedia database system for a news-on-demand application
Multimedia Systems - Special issue on multimedia database systems
Processing OODB queries by O-Algebra
CIKM '96 Proceedings of the fifth international conference on Information and knowledge management
Principles of multimedia database systems
Principles of multimedia database systems
Constraint-based automation of multimedia presentation assembly
Multimedia Systems
Querying Multimedia Presentations Based on Content
IEEE Transactions on Knowledge and Data Engineering
Design and Implementation of Display Specification for Multimedia Answers
ICDE '98 Proceedings of the Fourteenth International Conference on Data Engineering
An algebra for creating and querying multimedia presentations
Multimedia Systems - Special issue: Multimedia authoring and presentation techniques
Versioning XML-based office documents
Multimedia Tools and Applications
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There are now millions of PowerPoint documents available within corporate intranets and/or over the Internet. In this paper, we develop a formal model of PowerPoint databases. We propose a relational style algebra called pptA (PowerPoint Algebra) to query PowerPoint databases. The algebra contains some new operators (such as the APPLY operator that changes properties of objects, slides and presentations) as well as interesting twists on relational operators (e.g. join and cartesian product allow different entities being joined together to share attributes whose values may be merged). We prove a set of equivalence results within this algebra. We have implemented a version of pptA—the paper provides a cost model and experimental results on the conditions under which these equivalences are useful.