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IT 244 Database Management System

IT 244 Database Management System

IT 244 Database Management System. Lecture 11 More SQL Constraints &Triggers, SQL Authorization ,Transactions Foreign Keys, Local and Global Constraints, Privileges, Grant and Revoke, Grant Diagrams Triggers, Serializability, Isolation Levels, Atomicity

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1.03k views • 86 slides
Constraints and Triggers

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

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467 views • 46 slides
Constraints

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.

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516 views • 40 slides
Constraints

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.

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517 views • 37 slides
Constraints

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.

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518 views • 37 slides

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