'Char 20 primary key' presentation slideshows

CSCI 305 Introduction to Database Systems

<bookstore> <book category="COOKING"> <title lang ="en">Everyday Italian</title> <author> Giada De Laurentiis </author> <year>2005</year> <price>30.00</price> </book> <book category="FICTION"> <title lang ="en">Harry Potter</title>

797 views • 61 slides

Constraints and Triggers

Constraints and Triggers. Foreign Keys Local and Global Constraints Triggers. Constraints and Triggers. A constraint is a relationship among data elements enforced by the DBMS. Example : key constraints. Triggers are operations that are executed when a specified condition occurs

470 views • 46 slides

Constraints

Constraints. Foreign Keys Local and Global Constraints Triggers. Constraints and Triggers. A constraint is a relationship among data elements that the DBMS is required to enforce . Example : key constraints.

591 views • 38 slides

Constraints

Constraints. Foreign Keys Local and Global Constraints Triggers. Constraints and Triggers. A constraint is a relationship among data elements that the DBMS is required to enforce. Example : key constraints.

517 views • 37 slides

Constraints

Constraints. Foreign Keys Local and Global Constraints Triggers. Constraints and Triggers. A constraint is a relationship among data elements that the DBMS is required to enforce. Example : key constraints.

518 views • 37 slides

Constraints on Relations

472 views • 36 slides