'High level query language' diaporamas de présentation

Chapter 16

Chapter 16. Object Databases. What’s in This Module?. Motivation Conceptual model ODMG ODL – data definition language OQL – query language SQL:1999 object extensions CORBA. Problems with Flat Relations. Consider a relation Person ( SSN , Name , PhoneN , Child ) with:

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CHAPTER 18 Strategies for Query Processing

CHAPTER 18 Strategies for Query Processing. Introduction. DBMS techniques to process a query Scanner identifies query tokens Parser checks the query syntax Validation checks all attribute and relation names Query tree (or query graph) created Execution strategy or query plan devised

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Relational Algebra, Join and QBE

Relational Algebra, Join and QBE. Yong Choi School of Business CSUB, Bakersfield. Study Objectives. Learn about relational database algebra Understand Query-by-Example (QBE) Use Criteria in QBE Create Calculated Columns in QBE Calculate Statistics in QBE. Relational Algebra.

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Pictorial Database Systems

Pictorial Database Systems. Faruk Ku?can. Introduction. Pictures; Natural and effective objects to communicate for, People Computers Robotics. Introduction. Pictorial Information System; A new generation information system Capable of controlling and managing, Picture input device

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Lecture 3: System R

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Introduction

Integration of Biological Sources: Current Systems and Challenges Ahead ( Sigmod Record, Vol. 33. No. 3, September 2004 ) Thomas Hernandez & Sybbarao Kambhampati Dept. of Computer Science and Engineering Arizona State University. Introduction.

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