Access relationships - PowerPoint PPT Presentation

Relational Databases

Relational Databases. Overview Immediate access? Unnormalized, 1NF, 2NF, 3NF relational databases Operations for creating new relations-projection and join Indexes Operations for retrieving data from relations. Making Relations out of Relations. Two basic operations: projection and join

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CPSC 203 Introduction to Computers

CPSC 203 Introduction to Computers. Tutorial 03 &amp; 29 By Jie (Jeff) Gao. Database Concept. A collection of information related to a particular subject or purpose Database structure: Database Tables Fields Fields have data types Should be explicitly defined, not like Excel. Records.

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