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The global marketplace for SAN and NAS garage is expected to develop from US $2 billion in 1999 to over $25 billion by means of 2004. As business-to-business and business-to-consumer e-commerce matures, even higher calls for for administration of kept facts will come up. With the swift raise in information garage specifications within the final decade, effective administration of kept information turns into a need for the company.
SQL Server 2008 represents a large bounce ahead in scalability, functionality, and usefulness for the DBA, developer, and enterprise intelligence (BI) developer. it really is now not exceptional to have 20-terabyte databases operating on a SQL Server. SQL Server management used to only be the activity of a database administrator (DBA), yet as SQL Server proliferates all through smaller businesses, many builders have began to behave as directors to boot.
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Additional resources for MOC 6232B DMOC Implementing A Sql Server 2008 R2 Database TrainerHandbook Vol2
For example, you might have a column that holds an order number but it is not mandatory. You Ensuring Data Integrity through Constraints 14-9 might then add a constraint which specifies that the column must have a value if the salesperson column also has a value. Triggers Triggers are procedures (somewhat like stored procedures) that are executed whenever specific events like INSERT or UPDATE occur on a specific object such as a table. In the code for the trigger, you can then enforce even more complex rules for integrity.
13-26 Implementing a Microsoft® SQL Server® 2008 R2 Database Lesson 5 Alternatives to Functions Functions are only one option for implementing code. This lesson explores situations where other solutions may or may not be appropriate and helps you make decisions about which solution to use. Objectives After completing this lesson, you will be able to: • • Compare table-valued functions and stored procedures Compare inline functions and views Designing and Implementing User-Defined Functions 13-27 Comparing Table-valued Functions and Stored Procedures Key Points Table-valued functions and stored procedures can often be used to achieve similar outcomes.
They typically need to be retranslated by upper layers of code before being presented to the end users. Multiple Tiers The correct solution in most situations involves rules and checks being applied at multiple levels. The challenge with this, though, is in maintaining consistency between the rules and checks at different application levels. 14-6 Implementing a Microsoft® SQL Server® 2008 R2 Database Types of Data Integrity Key Points There are three basic forms of data integrity commonly enforced in database applications: domain integrity, entity integrity, and referential integrity.