| J.D. Ullman and C. Zaniolo. Deductive Databases: Achievements and Future Directions. ACM SIGMOD Record, Volume 19, Number 4, 1990. |
....and control system. Keywords Natural language interfaces, deductive databases, semantics, information extraction, logic programming. 1 Introduction Deductive database technology emerged during the past decade, it combines the strengths of both logic programming and relational database algebra [30]. The extended functionality led the way to solutions to practical problems which could not be handled efficiently before. In spite of the superiority in comparison with relational database systems, there still exists no broad acquaintance and acceptance with regard to practical applications [18] ....
J.D. Ullman and C. Zaniolo. Deductive Databases: Achievements and Future Directions. ACM SIGMOD Record, Volume 19, Number 4, 1990.
....databases is subject of a specialized textbook [CGT90] and is also extensively covered in [Ull89] CGT89] provides an introduction to Datalog, NT89] presents the logic database language LDL, an already implemented extension of Datalog. An Overview of logic and databases can be found in [GM92] [UZ90] discuss achievements and furture directions of research in the field. ....
J.D. Ullmann and C. Zaniolo. Deductive databases: Achievements and future directions. ACM SIGMOD Record, 19(4), 1990.
....paper we present three successful case studies: a CASE tool for security semantics, a production planning and control system, and a natural language interface. 1 Introduction The theory of deductive databases has been the topic of intensive research within the last years (for good reviews see [11, 28]) It has its origins in logic programming and relational database algebra. By combining the advantages of both research fields, deductive databases provide the following important extensions with regard to functionality [19] C there exists the possibility of formulating recursive queries, that ....
J.D. Ullman, C. Zaniolo. Deductive Databases: Achievements and Future Directions. ACM SIGMOD Record, Vol. 19, No. 4, 1990.
....data in a tuple at a time fashion. Database systems are designed to work effectively when data is accessed in a set at a time fashion. This leads to a mismatch between their approaches to processing data. To overcome this problem, we use a deductive database management system to access the data (Ullman and Zaniolo 1990) (Das 1992) The advantages offered by this are two folds. Firstly, the access method becomes set oriented, which implies faster access and proximity to the database mining framework. Secondly, as the ILP system generates patterns, features of the database query processor can be utilised to apply ....
Ullman, J.D. & Zaniolo, C. (1990). Deductive databases: Achievements and future directions. In SIGMOD Record, Vol.19, No.4, Dec. 1990.
....lists, bags and vector constructs. Updates are provided as an extension of the SQL2 syntax and deduction is implemented as an extension of the view mechanism of SQL2. 2. 2 Language Integration Strategy The rationale behind language integration is expressed by the following argument stated in [UZ90] A declarative formulation cannot compete with the cogency and optimality of textbook algorithms for specific problems. These situations call for a mixed mode, and for the harmonious cooperation between the two modes at the language and system levels. DOODs with integrated languages are designed ....
J. Ullman and C. Zaniolo. Deductive databases: Achievements and future directions. ACM - SIGMOD Records, 19(4):75--82, December 1990.
No context found.
Ullman, J. and C. Zaniolo, "Deductive Databases, Achievements and Future Directions," SIGMOD Record, pp. 77-83, Vol. 19, No. 4, ACM Press, Dec. 1990.
No context found.
Ullmann, J.; Zaniolo, C. (1991). Deductive Databases: Achievements and Future Directions. SIGMOD RECORD 19(4), pages 75--82.
No context found.
J.D. Ullman and C. Zaniolo 1990, Deductive Databases: Achievements and Future Directions: SIGMOD Record, Vol. 19, No. 4, pp. 75--83.
Online articles have much greater impact More about CiteSeer.IST Add search form to your site Submit documents Feedback
CiteSeer.IST - Copyright Penn State and NEC