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PLUG IT IN 3 Fundamentals of Relational Database Operations.

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Presentation on theme: "PLUG IT IN 3 Fundamentals of Relational Database Operations."— Presentation transcript:

1 PLUG IT IN 3 Fundamentals of Relational Database Operations

2 1.Query Languages 2.Entity–Relationship Modeling 3.Normalization and Joins

3 >>> 1.Understand the process of querying a relational database. 2.Understand the process of entity–relationship modeling. 3.Understand the process of normalization and the process of joins.

4 Query Languages PI3.1 Primary Key Secondary Key Foreign Key Structured Query Language (SQL) Query By Example (QBE)

5 Entity-Relationship Modeling PI3.2 Entity Relationship Modeling Entity Relationship Diagram (ERD) Business Rules Data Dictionary Relationships (Unary, Binary, Ternary)

6 Entity-Relationship Modeling (Continued) PI3.2 Connectivity Cardinality Attributes

7 Cardinality Symbols

8 One-to-One Relationship

9 One-to-Many Relationship

10 Many-to-Many Relationship

11 Normalization and Joins PI3.3 Normalization – 1 st Normal Form – 2 nd Normal Form – 3 rd Normal Form Functional Dependencies Join Operation

12 Raw Data Gathered from Pizza Shop Orders

13 Functional Dependency from Pizza Shop

14 1 st Normal Form for Pizza Shop Database

15 2 nd Normal Form for Pizza Shop Database

16 3 rd Normal Form for Pizza Shop Database

17 Join Process with Tables of 3 rd Normal Form for Pizza Orders


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