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1. Which of the following would best help you predict CPU utilization on a data base server A. Availability of a test server whose specifications are similar to the database server B. CPU-specific data about the processing time required for reads and writes C. Execution time required for database transactions performed on a retired database server D. Interviews with the database designer 2. Which of the following does not represent an advantage of a 64-bit CPU A. Increased memory support B. Faster processing speeds C. Increased support for multiprocessor systems D. Increased support for hardware

If nothing else is specified, the index that is created for a primary key is a clustered index and the index for a unique constraint is a non-clustered index. However, you can change this behavior by specifying it in the following constraint definition:

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max_clr_time Returns the maximum time in microseconds that this plan has ever consumed inside the .NET common language runtime (CLR) during a single execution. The CLR objects can be stored procedures, functions, triggers, types, and aggregates. total_elapsed_time last_elapsed_time

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3. You are running SQL Server 2005 on a 32-bit system running Windows Server 2003 Enterprise Edition. The system includes 32 GB of memory, and the oper ating system has been configured to use this memory. You now want SQL Server to be able to take advantage of as much of this memory as possible. What should you do A. Include the /3GB switch in the boot.ini file. B. Enable AWE in SQL Server. C. Include the /PAE switch in the boot.ini file. D. Enable 3GB in SQL Server.

-- Primary key as a clustered index. ALTER TABLE MyTable ADD PRIMARY KEY (MyTableID); -- Primary key as a nonclustered index. ALTER TABLE MyTable ADD PRIMARY KEY NONCLUSTERED (MyTableID);

Sizing the disk subsystem on a database server entails designing a RAID strategy so that neither throughput nor storage requirements exceed 85 percent of disk capacity.

After this lesson, you will be able to:

Returns the minimum elapsed time in microseconds for any completed execution of this plan. Returns the maximum elapsed time in microseconds for any completed execution of this plan.

Because primary keys and unique constraints are both constraints and indexes, you can find information about them in both the sys.key_constraints and sys.indexes catalog views.

Make recommendations for the placement and storage of the operating system, transaction log, and database files. Describe the costs and benefits of various RAID types. Describe the process of sizing the disk subsystem to meet throughput and storage requirements.

Foreign key constraints identify a column or combination of columns whose values must exist in another column or combination of columns in the same table or in another table in the same database. Foreign key constraints manage referential integrity between tables or within a single table. To implement a foreign key constraint, you must follow these rules:

The optimal disk configuration for a database server depends on the expected usage of that server. The more a database server is used, the more drive sets you should ded icate to individual server components. A basic design for a medium-usage database server includes three physical drive sets, each corresponding to logical drives. One volume (usually drive C) is reserved for the operating system and SQL Server 2005. A second volume is for the transaction logs, and a third is for the databases. This basic drive configuration is illustrated in Figure 1-7.

Although production database servers do not always follow the three-volume pattern, you should always keep the transaction log on a disk separate from the one with the data. The data should also be kept on its own disk.

You should treat the preceding list as a reference. It is unlikely that you will be asked to remember all the columns that can be returned by this DMV. You might, however, be asked about the DVM s function and the type of information it can provide.

The columns being referenced must have exactly the same data type (and collation, for string columns) as the local columns. The columns being referenced must have a unique index created on them. This is typically implemented using either a primary key or a unique constraint. Because the foreign key must reference a unique index, the foreign key columns have the same size limitations as that of the primary key and unique constraints.

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