By Carsten Thomsen
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A short and trustworthy approach to construct confirmed databases for center enterprise functionsIndustry specialists raved in regards to the facts version source booklet while it used to be first released in March 1997 since it supplied an easy, low-budget approach to layout databases for center enterprise services. Len Silverston has now revised and up-to-date the highly profitable First variation, whereas including a spouse quantity to maintain extra particular requisites of other companies.
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construct CPN versions and the way to examine those through simulation.
The moment quantity incorporates a unique presentation of the idea in the back of the
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are supported via desktop instruments. components of this quantity are particularly theoretical
while different elements are software orientated. the aim of the amount is to teach
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a deep realizing of the underlying mathematical conception (although such
knowledge will in fact be a help).
The 3rd quantity features a special description of a range of industrial
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from the tasks - in a manner that's helpful for readers who don't yet
have own event with the development and research of enormous CPN diagrams.
Another goal is to illustrate the feasibility of utilizing CP-nets and the
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Additional info for Database programming with C
2. Expand the UserMan database on your database server. 3. Expand the Tables node. 4. Right-click the table for which you want to create a trigger and select New Trigger from the pop-up menu. This brings up the trigger text editor, which is more or less the same editor you use for your C# code (see Figure 6-12). Figure 6-12. Trigger editor with default template In the trigger editor, you can see that the template automatically names a new trigger Trigger1 prefixed with the name of the table. Actually, if another trigger with this name already exists, the new trigger is named Trigger2, and so on.
NOTE The example code shown in this section is SQL Server only, but if you take a look at the accompanying example code, you’ll see that Oracle after triggers work almost the same as SQL Server triggers, although the syntax is different. NET Data Provider. 45. Why Use a Trigger? Triggers are automatic, so you don’t have to apply the business logic in your code. Here’s a perfect situation for a business rule: you need to check if a member of an organization has paid his or her annual fee and therefore is allowed to order material from the organization’s library.
This can be done using the Server Manager that comes with SQL Server, but I’ll use the Server Explorer. Here’s how you create a trigger for the example UserMan database: 1. Open up the Server Explorer window. 2. Expand the UserMan database on your database server. 3. Expand the Tables node. 4. Right-click the table for which you want to create a trigger and select New Trigger from the pop-up menu. This brings up the trigger text editor, which is more or less the same editor you use for your C# code (see Figure 6-12).