Advanced Query Facility.
Abstract
The report documents cumulative results of a 15-month R&D effort consisting in development of an adaptive query facility (AQF) for interactive exploitation of differently formatted target databases. AQF is a software package intended for experimentation and testing in operational environment. It provides a flexible and transparent on-line user access to target databases of arbitrary structure, and offers a variety of services including natural language query processing, relational modeling of target data structures, correlation of data from various databases, and generation of informative report displays for users lacking experience with computers. AQF operates through an intermediate relational data model, thus insuring independence of the organization of target databases and their respective database management systems. Software package consists of a natural language query processor; a general target database access module; an automatic report generator; grammar and dictionary entry software; database mapping table software; diagnostic and validation tools, and a basic grammar for English query language. The package is written in FORTRAN for portability and runnable on small scale processors like DEC PDP 11/45 under RSX-11M. AQF is also implementable on a micro-processor. Some commercially available CRT terminals can accommodate a 16-bit DEC LSI-11/03 micro-processor, up to 128K bytes of static MOS memory, serial interface, and a dual floppy-disk drive at a total price under $12,000. RSX-11M can run on such a micro-processor system, thus insuring immediate implementability of AQF in the present FORTRAN version on the system. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1980
- Accession Number
- ADA095717
Entities
People
- Clinton P. Mah