EMAIL(Electronic Mail) • E-mail lets you sent electronic mail to and receive it from anyone with and e-mail address.  Email  may contai...

Headings ER concept and terminology. Entities, Relationship and attribute. ER Diagrams. Mapping conceptual model into relational sc...

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Question 1       1.  What is the main purpose of conducting a software testing process in         developing a software Softwar...

Headings 1. Relational model terminology. 2. Keys. 3. Constraints(restriction). 4. Relational algebra. Introduction • The re...