Developing Entity Relationship Diagrams
Developing Entity Relationship Diagrams (ERDs) Introduction This document seeks to give expanded explanation and examples of how to produce entity relationship …
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www.javaguicodexample.comNormalization – Exercises & Answers (a) The table shown in Figure 1 is susceptible to update anomalies. Provide examples of insertion, deletion, and modification anomalies. Answers: This table is not well structured, un-normalized containing redundant data. By using a bottom-up approach we analyzing the given table for anomalies.
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www.javaguicodexample.comNormalization is a technique for producing a set of tables with desirable properties that support the requirements of a user or company. Major aim of relational database design is to group columns into tables to minimize data redundancy and reduce file storage space required by base tables. Take a look at the following example: StdSSN
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