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Showing posts with label constraints. Show all posts
Showing posts with label constraints. Show all posts
Sunday, December 8, 2013

How to Set up a Foreign Key Constraint in MySQL

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The following is a simple example that illustrates Foreign Key constraints: Creating a table for manager: CREATE TABLE manager (id integ...
Tuesday, October 1, 2013

Grails domain class: unique constraint for multiple columns

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Suppose a simple Grails domain class: class Account { String countryId ; String userName ;       String areaId;   ...
Monday, September 30, 2013

Grails: how to get/set a meta-constraint on domain class property such as belongsTo or other variables

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In the scaffolding templates there is a property domainClass from type org.codehaus.groovy.grails.commons.DefaultGrailsDomainClass . These...
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