TAILIEUCHUNG - Database System: Chapter 4 - The Relational Algebra and Calculus

Database System: Chapter 4 - The Relational Algebra and Calculus presents about Relational Algebra (Unary Relational Operations, Relational Algebra Operations From Set Theory, Binary Relational Operations, Additional Relational Operations, Examples of Queries in Relational Algebra); Relational Calculus. | Chapter 4 The Relational Algebra and Calculus Copyright © 2004 Ramez Elmasri and Shamkant Navathe 5/14/2020 4:10:14 AM Outline Relational Algebra Unary Relational Operations Relational Algebra Operations From Set Theory Binary Relational Operations Additional Relational Operations Examples of Queries in Relational Algebra Relational Calculus Tuple Relational Calculus Domain Relational Calculus Slide 4 - Database State for COMPANY All examples discussed below refer to the COMPANY database shown here. Slide 4 - Relational Algebra The basic set of operations for the relational model is known as the relational algebra. These operations enable a user to specify basic retrieval requests. The result of a retrieval is a new relation, which may have been formed from one or more relations. The algebra operations thus produce new relations, which can be further manipulated using operations of the same algebra. A sequence of relational algebra operations forms a relational algebra .

• Cơ sở dữ liệu
• Database System
• The Relational Algebra and Calculus
• Relational Algebra
• Relational Calculus
• Unary Relational Operations
• Relational Algebra Operations From Set Theory
• Database system concepts
• Lecture Database system concepts
• Database systems
• Database languages
• Database design
• Database system architectures
• Relational database design
• Lecture Database System
• Database system architecture
• File based approach
• Data management systems framework
• Recovery system
• Lecture Database systems
• Database architecture
• Database approach
• Relational databases
• Database design process
• Query optimization
• Transaction state
• Concurrency control
• Data analysis
• Information retrieval
• Parallel databases
• Distributed databases
• Advanced application development
• Advanced data types
• Advanced transaction processing
• Relational model
• Basic query structure
• Dynamic SQL
• Tuple relational calculus
• Entity relationship model
• Application design
• Object­ based databases