Vladimir Novacek, "Data Mining Query Language for Object-Oriented Database", Lecture Notes in Computer Science, Vol: 1475, February 19 1998.Novacek, V. (1998). Data mining query language for object-oriented database. Proceedings of the 2nd East European Symposium on Advances in Databases and...
We propose a visual query language object query diagram (OQD) for object-oriented databases (OODBs). Unlike other approaches for OODBs, in which a class is used as a primitive entity for query specification, in OQD we specialize a class as a number of object sets, each of which is a ...
Most query languages offer a set of powerful operators but unfortunately, this set is not extensible. In this paper, we describe the functional query language LIFOO that we designed for the object oriented database system O2. LIFOO allows users to define functional operators. We discuss this me...
概述 •面向对象查询语言 –OODBMS•OQL–ORDBMS•SQL3 概述 •ODMG–ObjectDatabaseManagementGroup–ODMG-93 •吸取OMG的COM(CommonObjectModel)、IDL(InterfaceDefinitionLanguage)•增加数据库内容，形成OM、ODL•OQL•力图成为OODBMS的标准 ODL中与查询相关的特性 •ODL（ObjectDefinitionLanguage）–用...
[37] introduce a query language adapted to the fuzzy semantic model. In the following of this section, we pay more attention to the queries and operations in the fuzzy relational databases, fuzzy object-oriented databases, and fuzzy XML. Fuzzy queries over crisp relational databases and XML are...
第八章 面向对象查询语言 Object-Oriented Query Languages;概述;概述;概述;ODL中与查询相关的特性;ODL——对象的操作;ODL——方法的说明;ODL——方法的说明;ODL——类的范围;ODL——类的范围;OQL;OQL——实例;OQL——实例;OQL——实例;OQL类型系统;OQL类型系统;OQL类型系统;OQL路径表达式;OQL路径表达式;OQL路径...
推理机制目标定位数据库Based on the approach implementing a deductive object-oriented database system through the underlying relational database, this paper presents an object reasoning language O-Datalog, which is the extension of Datalog in form and can deal with object-oriented data. For any O-...
LINQ,语言级集成查询(Language INtegrated Query) 经过了最近 20 年,面向对象编程技术( object-oriented (OO) programming technologies )在工业领域的应用已经进入了一个稳定的发展阶段。程序员现在都已经认同像 类(classes)、对象(objects)、方法(methods)这样的语言特性。考察现在和下一代的技术,一个新的编程技术的...
Conventional database systems generate a set of facts (extensional answers) as an answer for a given query. This also applies to object-oriented databases where a set of objects will be returned. However, deductive database systems give an opportunity to obtain the answer of a query as a set...
Object Query Language is often used to manipulate and retrieve data in object-oriented and object-relational databases. SQL and OQL use many of the same rules, grammar, and vocabulary. Different mining tasks have different rule specifications. The language for some of the rules and the syntax ...