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MCITP SQL Server 2005 Database Administration All-in-One Exam Guide
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C SELECT * FROM sysdm_db_index_physical_stats D DBCC CHECKDB 5 You are tasked with evaluating indexes on a database and providing recommendations for new indexes and indexes to drop You ve been given a trace file that contains a full day of queries that is representative of any normal business day What would you do A Review the trace file line-by-line and create your recommendations B Run the Index Tuning wizard against the trace file to create recommendations C Run the Database Engine Tuning Advisor against the trace file to create recommendations D Run SQL Profiler against the trace file to create recommendations 70-444 1 The following query is frequently run on your database:
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SELECT PartName FROM Parts WHERE UPPER(PartName) LIKE @PartSearch
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Due to the way the collations are set and the size of the Parts table, the query runs slowly A developer has created a computed column on the table with the following statement:
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ALTER TABLE Parts ADD UpperPartName AS UPPER(PartName)
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Now instead of searching the original PartName column, the UpperPartName column is searched However, it is still slow and you re asked for advice What do you suggest A Add a clustered index on the PartName column B Add a nonclustered index on the PartName column C Add a clustered index on the UpperPartName column D Add a nonclustered index on the UpperPartName column 2 What system monitor counters would be useful to monitor an SQL Server s performance related to how busy it is and how useful the indexes are Choose all that apply A Access Methods:Full Scans/sec B Databases:Transactions/sec C Locks:Locks/sec D SQL Statistics:Batch Requests/sec 3 You are asked to look at a database to identify why it seems to be slower than normal You notice that practically all the stored procedures that run daily are being recompiled daily What s a possible problem
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7: Optimizing Databases
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A The system doesn t have enough cache B The UPDATE STATISTICS command is being run daily against all the tables in the database C Statistics are set to be updated manually D Statistics are set to be updated automatically 4 You manage an SQL Server 2005 Server You suspect that some indexes may be fragmented What could you use to verify your suspicions A DBCC INDEXDEFRAG B DBCC CHECKINDEXES C SELECT * FROM sysdm_db_index_physical_stats D SELECT * FROM sysindexes 5 You are hired as a consultant to solve a problem with a database named Hurricanes on an SQL Server 2005 server A temperature table is very write-intensive during a hurricane and is also commonly used in queries Your measurements show that during a hurricane, the temperature table has two indexes that become fragmented within an hour after being rebuilt, causing the database to slow down significantly Both leaf and nonleaf level pages split frequently What can you do to solve this problem A Set the FILLFACTOR to 0 and the PAD_INDEX to OFF when rebuilding the index B Set the FILLFACTOR to 60 and the PAD_INDEX to OFF when rebuilding the index C Set the FILLFACTOR to 0 and the PAD_INDEX to ON when rebuilding the index D Set the FILLFACTOR to 60 and the PAD_INDEX to ON when rebuilding the index
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70-431 1 B To optimize the query, we create an index on the date column Since the OrdersID column must have a clustered index and we can have only one clustered index, the only other choice is a nonclustered index 2 D To decrease the fragmentation, we would either rebuild or reorganize the indexes Reorganize is always done online (leaving the table available) Rebuild can be done online if the WITH (ONLINE = ON) clause is used Defragmenting disks doesn t affect indexes LOB_COMPACTION simply says for any composite indexes with large object (LOB) data types, compact the pages holding them
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