tailieunhanh - Lecture Fundamentals of Database Systems - Chapter 6: The relational algebra and calculus

In this chapter we discuss the two formal languages for the relational model: the relational algebra and the relational calculus. The main contents in this chapter include: Example database application (COMPANY), overview of the QBE language (appendix D),. | DATA B A sE SYSTEMS FOURTH EDITION ELMASRI NAVATHE Chapter 6 The Relational Algebra and Calculus PEARSON Addison Wesley Copyright 2004 Ramez Elmasri and Shamkant Navathe Chapter Outline Example Database Application COMPANY 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 Overview of the QBE language appendix D Elmasri Navathe Fundamentals of Database Systems Fourth Edition Chapter 6-3 Copyright 2004 Ramez Elmasri and Shamkant .

TỪ KHÓA LIÊN QUAN