tailieunhanh - Báo cáo khoa học: "A FRIENDLY AND FLEXIBLE FRONT-END FOR DATA MANAGEMENT SYSTEMS"

EUFID is a natural language frontend for data management systems. It is modular and table driven so that it can be interfaced to different applications and data management systems. It allows a user to query his data base in natural English, including sloppy syntax and misspellings. The tables contain a data management system view of the data base, a semantic/syntactic view of the application, and a mapping from the second to the first. We are entering a new era in data base access. Computers and terminals have come down in price while salaries have risen. . | EUFID A FRIENDLY AND FLEXIBLE FRONT-END FOR DATA MANAGEMENT SYSTEMS Marjorie Templeton System Development Corporation Santa Monica CA. EUFID is a natural language frontend for data management systems. It is modular and table driven so that it can be interfaced to different applications and data management systems. It allows a user to query his data base in natural English Including sloppy syntax and misspellings. The tables contain a data management system view of the data base a semantic syntactic view of the application and a mapping from the second to the first. We are entering a new era in data base access. Computers and terminals have come down In price while salaries have risen. We can no longer make users spend a week In class to learn how to get at their data in a data base. Access to the data base must be easy but also secure. In some aspects ease and security go together because when we move the user away from the physical characteristics of the data base we also make It easier to screen access. EUFID is a system that makes data base access easy for an untrained user by accepting questions in natural English. It can be used by anyone after a few minutes -of coaching. If the user gets stuck he can ask EUFID for help. EUFID is a friendly but firm Interface which Includes security features. If the user goes too far In his questions and asks about areas outside of his authorized data base EUFID will politely misunderstand the question and quietly log the security violation. One beauty of EUFID is Its flexibility. It is written in FORTRAN for a PDP-1Ỉ 70. With minor modifications it could run on other mini-computers or on a large computer. It is completely table driven so that it can handle different data bases different views of the same data base or the same view of a restructured data base. It can be Interfaced with various data management systems currently it can access a relational data base via INGRES or a network data base via WWDMS. EUFID Is an .