'Tuple variables' presentation slideshows

IT 244 Database Management System

IT 244 Database Management System. Lecture 11 SQL Select-From-Where Statements Meaning of queries Subqueries Ref : - A First Course in Database System (Jeffrey D Ullman, Jennifer Widom) + online. Why SQL?.

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Introduction to SQL

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Introduction to SQL

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Database Management Systems Chapter 6 The Database Language SQL (I)

Database Management Systems Chapter 6 The Database Language SQL (I). Instructor: Li Ma Department of Computer Science Texas Southern University, Houston. October, 2006. Introduction to SQL. Select-From-Where Statements Subqueries Grouping and Aggregation. Why SQL?.

863 views • 70 slides

Introduction to SQL

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Introduction to SQL

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Introduction to SQL

783 views • 69 slides

Introduction to SQL

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Introduction to SQL

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Introduction to SQL

865 views • 61 slides

The Relational Calculus

The Relational Calculus. (Based on Chapter 9 in Fundamentals of Database Systems by Elmasri and Navathe, Ed. 3). Contents. Introduction to Relational Calculus Tuple Relational Calculus Tuple Variables and Range Relations Formal Specification of Tuple Relational Calculus

841 views • 61 slides

Introduction to SQL

691 views • 61 slides

Introduction to SQL

Introduction to SQL. Select-From-Where Statements Meaning of queries Subqueries. Resources. www.sqlcourse.com mySql motore di database free mySql Control Center. Why SQL?.

622 views • 46 slides

Relational Calculus

Relational Calculus. Objectives. Introduction + Tuple Relational Calculus + Domain relational Calculus + QBE +. - Introduction. Relational calculus is a formal query language where we write one declarative expression to specify a retrieval request.

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Minggu 3, Pertemuan 6 Relational Calculus

Minggu 3, Pertemuan 6 Relational Calculus. Matakuliah : T0206-Sistem Basisdata Tahun : 2005 Versi : 1.0/0.0. Learning Outcomes. Pada akhir pertemuan ini, diharapkan mahasiswa dapat menjelaskan konsep relational calculus (C2). Outline Materi.

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Minggu 3, Pertemuan 6 Relational Calculus

Minggu 3, Pertemuan 6 Relational Calculus. Matakuliah : T0206-Sistem Basisdata Tahun : 2005 Versi : 1.0/0.0. Learning Outcomes. Pada akhir pertemuan ini, diharapkan mahasiswa dapat menjelaskan konsep relational calculus (C2). Outline Materi.

378 views • 23 slides

Databases : SQL Multi-Relations

Databases : SQL Multi-Relations. 2007, Fall Pusan National University Ki-Joune Li. These slides are made from the materials that Prof. Jeffrey D. Ullman distributes via his course web page ( http://infolab.stanford.edu/~ullman/dscb/gslides.html ). Multi-Relation Queries.

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UW classification: background rejection

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TRC vs DRC

TRC vs DRC. 2003. 10. 12 ???. Queries in TRC and DRC. TRC Q = {t| f(t)} where t is a (free) tuple variable and f(t) is a well-formed formula DRC Q = {x 1 ,x 2 ,..,x k | f(x 1 ,x 2 ,..,x k )} where x i is a (free) domain variable and f(x 1 ,x 2 ,..,x k ) is a well-formed formula.

290 views • 8 slides

TRC vs DRC

TRC vs DRC. 2003. 10. 12 ???. Queries in TRC and DRC. TRC Q = {t| f(t)} where t is a (free) tuple variable and f(t) is a well-formed formula DRC Q = {x 1 ,x 2 ,..,x k | f(x 1 ,x 2 ,..,x k )} where x i is a (free) domain variable and f(x 1 ,x 2 ,..,x k ) is a well-formed formula.

146 views • 8 slides