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Monthly Archives: December 2017

Advanced Database – Apply a self join

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For this example, we need to create a new table with the properties and data shown. A self join links a table to itself. In the employee table for instance, if we want a query to list each employee and … Take lesson

Advanced Database – Apply, modify a subtract join

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For this example we need to add a record to the ‘Car and owner details’ table with a Car Reg Number that doesn’t appear in the ‘Jobs’ table. Open the Car and owner details table and add a new record … Take lesson

Advanced Database – Apply, modify an outer join

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An outer join allows you to display ALL records from one table, but only records in the other table that match the related fields. You can choose between a Left outer join or Right outer join in the Type drop-down … Take lesson

Advanced Database – Apply, modify an inner join

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Joins are links between table that are used to modify the way queries select records. To demonstrate, create a new query in design view. Add the tables ‘Car and owner details’ and ‘Jobs’ In the Field drop down menus, select … Take lesson



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