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PO2 Cascading Deletes in Sql Server between 2 tables
 

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    <p>Let's say I have 2 tables</p> <pre><code>CREATE TABLE [dbo].[People]( [ID] [int] IDENTITY(1,1) NOT NULL, [Nom] [nvarchar](50) NOT NULL, CONSTRAINT [PK_People] PRIMARY KEY CLUSTERED ( [ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] </code></pre> <p>and </p> <pre><code>CREATE TABLE [dbo].[Transactions]( [ID] [int] IDENTITY(1,1) NOT NULL, [BUYER_ID] [int] NOT NULL, [SELLER_ID] [int] NOT NULL, [DateTransaction] [datetime] NOT NULL, CONSTRAINT [PK_Transactions] PRIMARY KEY CLUSTERED ( [ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] </code></pre> <p>The logic being that the transaction table requires 2 records from the people table, a buyer and a seller.</p> <p>What I am trying to do is implement cascading delete on both the BUYER_ID and SELLER_ID columns.</p> <p>However, I can add one (either) without a hitch, but if i try to add second one, when I go to save, I get an error message...</p> <pre><code>Unable to create relationship 'FK_Transactions_Buyer'. Introducing FOREIGN KEY constraint 'FK_Transactions_Buyer' on table 'Transactions' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints. </code></pre> <p>Is there a way to do this without using triggers or are triggers the best way to do this</p>
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