18 results with keyword: 'object oriented querying of existing relational databases'
The query translation module uses the information stored in the knowledge base to translate SOQL queries based on the created object-oriented schema into equivalent SQL queries based
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Relational database systems are widely used in research and industry. A major prob- lem of relational systems are the poor query facilities of SQL. In this paper, we described a
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After an introduction to the fundamental concepts of object-oriented data, the monograph provides a review of object-oriented conceptual modeling techniques using side-by-side
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After a short introduction in propositional and first order logic, we implement dynamically a small database and translate some SQL queries in filtered java 8 streams,
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The aim of this thesis is to study the existing (mature) distribution design techniques for relational databases and to adopt them into an object oriented
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Even though Ava does not know how to swim, she goes to the party because her friendship with Melanie is more important than her fear of water.. Write a paragraph to describe a
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Normalization Order -Order_no -Cust_ID -Date -State -Tax_Rate Prod_Order -Order_no -Product_no -Product_qty 1..* 0..* Customer -Cust_ID -Last_Name -First_Name Product
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create table nowshowing (film integer, theater ref(theater_t) scope theaters, start date, end date); create table films (filmno integer, title text, stars. varchar(25)
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-111 appropriate SQL operations from previous chapters apply to tables that are declared with a UDT or that have attributes whose type is a CDT. There are also some entirely
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reference to the type Person, with table people as scope: create type Department (. name
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Vnorená tabuľka je neusporiadaná mnoţina dátových elementov, ktoré sú zhodného dátového typu. Pri definícii nie je nutné narozdiel od poľa špecifikovať počet
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The SQL4 ORDB schema is defined as a set of user-defined types (UDTs), and a set of typed tables created based on these UDTs for storing data.. Each
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They often provide a declarative mapping schema that links domain classes needing persistence to relational tables and mecha- nisms for managing database transactions, security,
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Object-oriented databases ( OODBs ) were introduced in an attempt to eliminate the impedance mismatch problem experienced when persisting objects to relational
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Relational databases don’t normally let you define your own data types (although some authors, most notably [date95], argue that this is a deficiency of current implementations and
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Such resources must be available to global (top level) users via a common object data model (provided by the virtual repository) and an object-oriented query language so that these
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This service provides facility to access and manipulate data from various data store, namely, file system, XML databases, relational databases, object oriented database and
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