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Database Management Systems II
Session 5
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Objectives Design database schema Understand elements of RDBMS
Understand use of SQL and read simple SQL commands Complete a RDBMS exercise using MS Access
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Topics Database Schema Queries, Forms and Reports Introduction to SQL
Hands-on exercise
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Scenario Draw an E-R diagram:
Northwind is a wholesaler of delicatessen products. Customers are all over the world and each member of the sales team may deal with any customer. Products is kept in a central warehouse and items are ordered from Suppliers when numbers reach the re-order level. An Order may consist of several different products and may be delivered by any one of three Shippers.
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Entity-Relationship Diagram
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Table Definition Table: Contacts Field Name Data Type Size Indexing
Contact ID Number Long Integer Primary Key Name Text 30 Birthday Date Birthday Card Yes/No
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RDBMS Objects FORMS TABLES QUERIES REPORTS
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Forms
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Reports
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SQL Code SELECT ProductID, ProductName FROM Products
WHERE Discontinued = ‘No’ ORDER BY ProductName; - What will the query output look like? - What is this query doing?
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Exercise Honest Pete’s Car Sales is a business that deals in second hand cars. You have been given a table of current stock and a table of sales staff. Construct a schema with table definitions showing primary keys and indicating how tables should be linked. Following your design, construct the DBMS in MS Access
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