'Relational calculus' presentation slideshows

SQL Unit 18: Data Management: Databases and Organizations Richard Watson

SQL Unit 18: Data Management: Databases and Organizations Richard Watson. Summary of Selections from Chapters 9, 10 prepared by Kirk Scott. Chapter 9, The Relational Model and Relational Algebra. Generally speaking, the contents of this chapter should not be too difficult

1.32k views • 120 slides

SQL Unit 18: Data Management: Databases and Organizations Richard Watson

SQL Unit 18: Data Management: Databases and Organizations Richard Watson. Summary of Selections from Chapters 9, 10 prepared by Kirk Scott. Chapter 9, The Relational Model and Relational Algebra. Generally speaking, the contents of this chapter should not be too difficult

1.33k views • 120 slides

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??? ???? ?????? ??????. Lecture (1). Welcome. Welcome to ???304 An Introduction to databases. We hope you will enjoy it. Information about course. ??? ?????? : ????? ????? ???????? An Introduction to databases ??? ?????? :???304. Database course - People.

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Revision for Midterm 3 Part 3

CS157A Lecture 23. Revision for Midterm 3 Part 3. Prof. Sin-Min Lee Department of Computer Science. Set Operators. Relation is a set of tuples, so set operations should apply: ?, ?, ? (set difference)

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CSE 544 Relational Calculus

CSE 544 Relational Calculus. Lecture #2 January 11 th , 2011. Announcements. HW1 is posted First paper review due next week Friday: project groups are due. Announcements. Guest lecture on Tuesday, 1/18, by Bill Howe SQLShare : Smart Services for Ad Hoc Databases

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RELATIONAL ALGEBRA

Lecture 7. RELATIONAL ALGEBRA. Prof. Sin-Min LEE Department of Computer Science. Terminology: table (relation) row (tuple) formally, a relation is a set of ordered n-tuples. Domain : set of data values from which an attribute value can be drawn. Eg. set of department names

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Data Sciences: From First-order Logic to the Web

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Revision of Midterm 2

CS157A Lecture 13. Revision of Midterm 2. Prof. Sin-Min Lee Department of Computer Science. Relational Calculus. Important features: Declarative formal query languages for relational model Based on the branch mathematical logic known as predicate calculus Two types of RC:

580 views • 47 slides

Integrity Constraints

Integrity Constraints. An important functionality of a DBMS is to enable the specification of integrity constraints and to enforce them. Knowledge of integrity constraints is also useful for query optimization. Examples of constraints: keys, superkeys foreign keys

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Outline

Outline. Introduction Background Distributed Database Design Database Integration Semantic Data Control Distributed Query Processing Multidatabase Query Processing Query Rewriting Optimization Issues Distributed Transaction Management Data Replication Parallel Database Systems

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Relational Algebra & Calculus

Relational Algebra & Calculus. S. MUTHU KRISHNAN Department of Computer Science. Relational Query Languages. Query languages : Allow manipulation and retrieval of data from a database. Relational model supports simple, powerful QLs: Strong formal foundation based on logic.

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Using SQL with Vantage

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CSE544

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Outline

Outline. Introduction Background Distributed Database Design Database Integration Semantic Data Control Distributed Query Processing Overview Query decomposition and localization Distributed query optimization Multidatabase query processing Distributed Transaction Management

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Lecture 1: Introduction

Lecture 1: Introduction. AnHai Doan CS 511 Fall 05. Welcome to CS 511, Advanced Database Management!. Instructor: AnHai Doan, anhai@cs 2118 Siebel Office hours: WF 3:15-4:15 (right after each lecture) Won't have office hour today Home page: google for "cs511 uiuc"

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Outline

Outline. Introduction Background Distributed DBMS Architecture Distributed Database Design Semantic Data Control ? View Management ? Data Security ? Semantic Integrity Control Distributed Query Processing Distributed Transaction Management

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course: Database Systems ( A7B36DBS, Y36DBS, X36DBS )

course: Database Systems ( A7B36DBS, Y36DBS, X36DBS ). Lecturers: RNDr. Irena Mlynkova, Ph.D. & Mgr. Martin Necasky, Ph.D. Acknowledgement: The slides were kindly lent by Doc. RNDr. Tomas Skopal, Ph.D., Department of Software Engineering, Charles University in Prague.

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Chapter 6

Chapter 6. The Relational Algebra and Relational Calculus. FIGURE 6.1 Results of SELECT and PROJECT operations. (a) s (DNO=4 AND SALARY>25000) OR (DNO=5 AND SLARY>30000) (EMPLOYEE). (b) p SEX, SALARY (EMPLOYEE).

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Riyadh Philanthropic Society For Science Prince Sultan College For Woman

Riyadh Philanthropic Society For Science Prince Sultan College For Woman Dept. of Computer & Information Sciences CS 340 Introduction to Database Systems (Chapter 6 Tutorial). Exercise 1 Given the Following database schema: Specify the following queries in: Relation algebra

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Relational Algebra

Relational Algebra. Relational Calculus. Relational Algebra Operators. Relational algebra defines the theoretical way of manipulating table contents using the relational functions Shows HOW Operators SELECT PROJECT JOIN INTERSECT UNION DIFFERENCE PRODUCT DIVIDE.

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