'Primary key values' diaporamas de présentation

Database Management Systems (DBMS)

Database Management Systems (DBMS). DeSiaMore www.desiamore.com/ifm Bachelor of Computer Science and BSc IT Year 1. 1. Data Normalization. Outline Introduction Keys Relationships First Normal Form (INF) Second Normal Form (2NF) Third Normal Form (3NF) Boyce-Codd Normal Form (BCNF)

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Chapter 5 Relational Model Concepts

Chapter 5 Relational Model Concepts. Dr. Bernard Chen Ph.D. University of Central Arkansas. Relational Model Concepts. A Relation is a mathematical concept based on the ideas of sets The model was first proposed by Dr. E.F. Codd of IBM Research in 1970 in the following paper:

548 views • 44 slides

The Relational Data Model and Relational Database Constraints

The Relational Data Model and Relational Database Constraints. Chapter Outline. Relational Model Concepts Relational Model Constraints and Relational Database Schemas Update Operations and Dealing with Constraint Violations. Relational Model Concepts.

803 views • 41 slides

The Relational Data Model and Relational Database Constraints

The Relational Data Model and Relational Database Constraints. Chapter Outline. Relational Model Concepts Relational Model Constraints and Relational Database Schemas Update Operations and Dealing with Constraint Violations. Relational Model Concepts.

418 views • 41 slides

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Chapter 5

Chapter 5. The Relational Data Model and Relational Database Constraints. Informal Definitions. Informally, a relation looks like a table of values. A relation typically contains a set of rows .

355 views • 19 slides