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Shamkant B. Navathe ... He was working as a system ... He was the program co-chair at the 1985 ACM Annual Conference of the Special Interest Group on Management of ...
A deductive database is a database system that can make deductions (i.e. conclude additional facts) based on rules and facts stored in its database. Datalog is the language typically used to specify facts, rules and queries in deductive databases.
The enhanced entity–relationship (EER) model (or extended entity–relationship model) in computer science is a high-level or conceptual data model incorporating extensions to the original entity–relationship (ER) model, used in the design of databases.
Fundamentals of Database Systems, "Sixth Edition", with S. Navathe, Addison-Wesley Pearson, 2011. SEEC: A Dual Search Engine for Business Employees and Customers, with k. Taha, in Service and Business Computing Solutions with XML: Application for Quality Management and Best Processes , (book chapter), IGI Global Publishing, 2009.
The logical ER model is however developed independently of the specific database management system into which it can be implemented. Physical data model One or more physical ER models may be developed from each logical ER model. The physical ER model is normally developed to be instantiated as a database.
A given database management system may provide one or more models. The optimal structure depends on the natural organization of the application's data, and on the application's requirements, which include transaction rate (speed), reliability, maintainability, scalability, and cost.
Database theory encapsulates a broad range of topics related to the study and research of the theoretical realm of databases and database management systems.. Theoretical aspects of data management include, among other areas, the foundations of query languages, computational complexity and expressive power of queries, finite model theory, database design theory, dependency theory, foundations ...
Model 204 is commonly used in government and military applications. [8] [9] [10]It was used commercially in the UK by Marks & Spencer. [citation needed] It was also used at the Ventura County Property Tax system in California, [11] the Harris County, Texas, Justice Information Management System, [12] and in the New York City Department of Education's Automate The Schools system.