Implementation of SQL3 Structured Types with Inheritance and Value Substitutability

نویسندگان

  • You-Chin Fuh
  • Stefan Deßloch
  • Weidong Chen
  • Nelson Mendonça Mattos
  • Brian T. Tran
  • Bruce G. Lindsay
  • Linda DeMichel
  • Serge Rielau
  • Danko Mannhaupt
چکیده

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Collections of Objects in SQL3

SQL3 generalizes the relational model into an object model offering abstract data types, multiple inheritance, and dynamic polymorphism. Tables may then contain collections (multisets) of objects, and sets and lists are defined as closely related collection types. By specifying an SQL-Table type template to correspond to the existing Table concept, it is possible to treat sets and lists as subt...

متن کامل

Extensible Location Dependent Spatial Object Search on Road Networks

Extensible Location-Dependent Spatial Object that searches for spatial object on road networks. Here it provides Distance Indexing technique and providing a dynamic object mapping mechanism of spatial object search. It is very efficient and flexible for various types of queries, namely, range search and nearest neighbor search, on objects over large-scale networks. In spatial object search, a l...

متن کامل

A Taxonomy for Object-Relational Queries

A comprehensive study of object-relational queries gives not only an understanding of full capability of object-relational query language but also a direction for query processing and optimization. This chapter classifies object-relational queries into REF queries, aggregate queries and inheritance queries. REF queries are queries involving REF pointers, whereas aggregation queries use either n...

متن کامل

Decisions of Value: Going Backstage; Comment on “Contextual Factors Influencing Cost and Quality Decisions in Health and Care: A Structured Evidence Review and Narrative Synthesis”

This commentary expands on two of the key themes briefly raised in the paper involving analysis of the evidence about key contextual influences on decisions of value. The first theme focuses on the need to explore in more detail what is called backstage decision-making looking at how actual decisions are made drawing on evidence from ethnographies about decision-making. These studies point to l...

متن کامل

Formal Semantics of Inheritance and Object Substitutability

In this paper we study the problem of semantic substitutability of objects. First we give semantics of classes, objects and inheritance in presence of dynamic binding. For this purpose we extend Cook and Palsberg's denotational semantics of stateless classes and inheritance by adding state. We build our theory on the basis of reenement calculus, which is a logic framework for reasoning about co...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1999