Titlebook: Beginning Databases with PostgreSQL; From Novice to Profe Neil Matthew,Richard Stones Book 2005Latest edition Richard Stones and Neil Matth

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书目名称Beginning Databases with PostgreSQL被引频次学科排名




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书目名称Beginning Databases with PostgreSQL读者反馈学科排名

Observe

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Evaluation of Information Models sequence numbers for you, by not providing data for serial type columns..We saw how the very simple UPDATE and DELETE statements work, and how to use them with WHERE clauses, just as with the SELECT statement. We also mentioned that you should always test UPDATE and DELETE statements with WHERE cla

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Knowledge Discovery and Data Mining less error-prone. The power of triggers and stored procedures comes when your declarative constraints become very complex, or you wish to implement a constraint that is too complex for the declarative form..Now that we have covered some advanced PostgreSQL techniques, in the next chapter, we will m

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Knowledge Discovery and Data Miningoring data on a production server; mistakes can be serious..In the next chapter, we will return to the topic of database design, which we looked at briefly in Chapter 2. It presents more formal guidelines for how to design a database, and how to enforce data integrity using constraints, which we met

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Accessing Your Data,l the everyday features of the SELECT statement, and once you understand the SELECT statement, much of the rest of SQL is reasonably straightforward. We will be coming back to the SELECT statement in Chapter 7 to look at some more advanced features that you will need from time to time, but you will

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Functions, Stored Procedures, and Triggers, less error-prone. The power of triggers and stored procedures comes when your declarative constraints become very complex, or you wish to implement a constraint that is too complex for the declarative form..Now that we have covered some advanced PostgreSQL techniques, in the next chapter, we will m

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