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Abstract : |
Information retrieval systems are currently being developed to represent and manipulate complex multimedia objects. Such objects contain two types of components, i.e. structured components (e.g. of the type integer, real, fixed-length string, etc.), and unstructured components (e.g. text, images, sounds). Relational database systems (RDBS) are often used to store structured data and retrieve it via exact matching, while unstructured data is organized into inverted files, and accessed by Information storage and Retrieval Systems (IRS), utilizing indeterminate matching. The difficulty is how to fill the gap between the RDBs and inverted files, as well as the gap between the RDBMSs and IRSs based on inverted files. We describe an approach to integrating the two types of systems and the two different types of data. 1, |
