'Foreign key ics' presentation slideshows

The Relational Model Chapter 3

The Relational Model Chapter 3. How is data represented in the relational model? What integrity constraints can be expressed? How can be data created and modified? How can data be manipulated and queried? How can we create, modify and query tables using SQL?

554 views • 49 slides

ICS 321 Fall 2009 The Relational Model (i)

ICS 321 Fall 2009 The Relational Model (i). Asst. Prof. Lipyeow Lim Information and Computer Science Department University of Hawaii at Manoa. Review. ER model models the application data at the conceptual level it does not assume any data model at the logical level

279 views • 22 slides

The Relational Model

The Relational Model. Relational Model Concepts. The relational data model is based on the concept of a relation. The strength of the relational approach to data management comes from the formal foundation provided by the theory of relations.

193 views • 19 slides

Introduction to Relations

270 views • 10 slides