MIS 235 Cruez - MIS235 LearningObjectives...

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MIS 235 Learning Objectives Review and Practice SQL
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SQL- Aggregation and Joins CustID Fname Lname Address OrderID CustID OrderAmt Customers OrderDetails
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Non-Normalized Data
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Normalized Data •Breaks spreadsheet into 5  tables •Eliminates data redundancy •Relationships enable joining
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Small Groups: SQL Activity Use the handout Organize the data into tables (normalization) Group by similar topic (entities and attributes) Select or create a primary key Use a foreign key to create a relationship between tables Write the SQL that would answer the questions
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STUDENTS Studentid Facultyid Fname Lname Address Year FACULTY Facultyid Lname Room  Year could go in either table- business rules  Why should facultyid be the foreign key in STUDENTS (and not  studentid in FACULTY)? 1
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MIS 235 Cruez - MIS235 LearningObjectives...

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