单选题You create a table in your database that contains 50，000 rows approximately. The queries performed on the table are complex and performed on the table frequently. Which advisor helps you achieve the best performance of database for queries by recommend

题目
单选题
You create a table in your database that contains 50，000 rows approximately. The queries performed on the table are complex and performed on the table frequently. Which advisor helps you achieve the best performance of database for queries by recommending the appropriate indexes？（）
A

SQL Access Advisor

B

 Memory Advisor

C

SQL Tuning Advisor

D

 Segment Advisor

相似考题

1.You have a very large table that your users access frequently. Which of the following advisors will recommend any indexes to improve the performance of queries against this table?（）A、The Automatic Memory Manager (AMM)B、The SQL Tuning AdvisorC、The Segment AdvisorD、The SQL Access Advisor SQL

2. You are a database administrator for your company. The company uses a SQL Server 2005 database that includes a table named Inventory. The table contains a column named Price. A company policy states that the value in the Price column cannot be decreased by more than 10 percent in any single database operation. Updates to the Price column are made by various means， including by using ad hoc queries. You need to ensure that this company policy is enforced. What should you do？（）A、Create a trigger that rolls back changes to the Price column that violate company policy.B、Create a stored procedure that disallows changes to the Price column that violate company policy.C、On the Price column， create a check constraint that requires a specified minimum value.D、On the Price column， create a foreign key constraint to a table that contains valid prices.

3. A warehouse fact table in your Oracle 12c Database is range-partitioned by month and accessed frequently with queries that span multiple partitions The table has a local prefixed, range partitioned index. Some of these queries access very few rows in some partitions and all the rows in other partitions, but these queries still perform a full scan for all accessed partitions. This commonly occurs when the range of dates begins at the end of a month or ends close to the start of a month. You want an execution plan to be generated that uses indexed access when only a few rows are accessed from a segment, while still allowing full scans for segments where many rows are returned. Which three methods could transparently help to achieve this result?（）A、Using a partial local Index on the warehouse fact table month column with indexing disabled to the table partitions that return most of their rows to the queries.B、Using a partial local Index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.C、Using a partitioned view that does a UNION ALL query on the partitions of the warehouse fact table, which retains the existing local partitioned column.D、Converting the partitioned table to a partitioned view that does a UNION ALL query on the monthly tables, which retains the existing local partitioned columnE、Using a partial global index on the warehouse fact table month column with indexing disabling for the table partitions that return most of their rows to the queries.F、Using a partial global index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.

4.While designing your database， you have created the EMPLOYEES table as an index-organized table （IOT）. You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（） A、A primary key must have been created.B、A mapping table must have been created.C、An overflow tablespace must have been specified.D、The PCTTHRESHOLD option must have been specified.

更多“单选题You create a table in your database that contains 50，000 rows approximately. The queries performed on the table are complex and performed on the table frequently. Which advisor helps you achieve the best performance of database for queries by recommend”相关问题

  • 第1题：

    You find today’s performance of your production database to be the best ever. Therefore， you want to be notified in the future whenever the performance degrades by 10% of today’s performance. What is the first step that you would take to ensure this？（）

    • A、create baseline metrics for today’s performance
    • B、write the current database metrics to a database table and create a trigger to compare with future database statistics
    • C、write the current database metrics to a flat file and create an operating script to compare with future database statistics
    • D、write the current database metrics to a database table and create a procedure to compare with future database statistics
    • E、write the current database metrics to a database table and submit a job using DBMS_JOB to compare with future database statistics

    正确答案:A

  • 第2题：

    In one of your online transaction processing （OLTP） applications， users are manipulating and querying a database table simultaneously. From the Segment Advisor， you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries.  Which option would you use with the ALTER TABLE command to achieve this objective？（）

    • A、REBUILD
    • B、CASCADE
    • C、TRUNCATE
    • D、ROW MOVEMENT
    • E、SHRINK SPACE COMPACT
    • F、SHRINK SPACE CASCADE

    正确答案:E

  • 第3题：

    Which three tasks can be performed by using the performance Schema?（）

    • A、Finding queries that are not using indexes
    • B、Finding rows that are locked by InnoDB
    • C、Finding client connection attributes
    • D、Finding the part of a code in which a single query is spending time
    • E、Finding the size of each table

    正确答案:A,B,C

  • 第4题：

    You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005. You work as a database administrator for your company. A SQL Server 2005 computer is managed by you， and a database named Customers is included by the SQL Server 2005 computer. A table named CustInfo is included by the database. An identity column named CustID and an nvarchar column named CustName are included by the table. According to the company requirement， rows which duplicate CustName values are included should be moved from the CustInfo table every year. However， the company requests to have rows removed from the CustInfo table after the rows have been manually examined and verified as being duplicates. Since you are the technical support， you are required to think out a method to have potential duplicate rows identified for manual examination. The minimum amount of administrative effort should be utilized.  Which action should be performed to finish the task？（）

    • A、A trigger should be created for the CustInfo table so as to roll back INSERT queries that duplicate data is included.
    • B、A new unique index should be created on the CustName column. And then， IGNORE_DUP_KEY = ON should be specified when creating index.
    • C、On the CustName column， a foreign key constraint should be created， and a distinct list of CustName values is referenced by the foreign key constraint.
    • D、A SELECT INTO query should be utilized， and GROUP BY and HAVING clauses should be included by the query to create a new table that contains duplicate rows from the CustInfo table.

    正确答案:D

  • 第5题：

    A Windows Azure application retrieves data from SQL Azure.   You need to recommend an approach for improving application query performance.  What should you recommend？（）

    • A、 Create a database view to retrieve the data.
    • B、 Use a clustered index on the SQL Azure database tables.
    • C、 Open a new database connection when an operation times out.
    • D、 Create SQL Azure database table indexes basedon application queries

    正确答案:D

  • 第6题：

    单选题
    You have a very large table that your users access frequently. Which of the following advisors will recommend any indexes to improve the performance of queries against this table?（）
    A

    The Automatic Memory Manager (AMM)

    B

    The SQL Tuning Advisor

    C

    The Segment Advisor

    D

    The SQL Access Advisor


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    You find today’s performance of your production database to be the best ever. Therefore， you want to be notified in the future whenever the performance degrades by 10% of today’s performance. What is the first step that you would take to ensure this？（）
    A

    create baseline metrics for today’s performance

    B

    write the current database metrics to a database table and create a trigger to compare with future database statistics

    C

    write the current database metrics to a flat file and create an operating script to compare with future database statistics

    D

    write the current database metrics to a database table and create a procedure to compare with future database statistics

    E

    write the current database metrics to a database table and submit a job using DBMS_JOB to compare with future database statistics


    正确答案： E
    解析： 暂无解析

  • 第8题：

    单选题
    You have a very large table that your users access frequently. Which of the following advisors will recommend any indexes to improve the performance of queries against this table?（）
    A

    The Automatic Memory Manager (AMM)

    B

    The SQL Tuning Advisor

    C

    The Segment Advisor

    D

    The SQL Access Advisor SQL


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    A Windows Azure application retrieves data from SQL Azure.   You need to recommend an approach for improving application query performance.  What should you recommend？（）
    A

     Create a database view to retrieve the data.

    B

     Use a clustered index on the SQL Azure database tables.

    C

     Open a new database connection when an operation times out.

    D

     Create SQL Azure database table indexes basedon application queries


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    While designing your database， you have created the EMPLOYEES table as an index-organized table （IOT）. You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）
    A

    A primary key must have been created.

    B

    A mapping table must have been created.

    C

    An overflow tablespace must have been specified.

    D

    The PCTTHRESHOLD option must have been specified.


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a n On-Line Analytical Processing （OLAP） database named in the instance. The database contains a dimension table named Clients. Ever hour backup of data of the Clients table is performed. But the Clinets table contains redundant data. You must keep the disk space used to store the Clients table.  In the options below， which compression technology should you use？（）
    A

    You should use row compression 

    B

    You should use page compression 

    C

    You should use backup compression 

    D

    You should use windows NTFS file system compression


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database which is named Sellings in the instance. The Sellings database contains a table named Productions. The table is used to stores information about all types of products. The Productions table is often queried by users on the basis of the RadioSize column. The RadioSize column contains the NULL value for all products other than Radios. Currently no index exists on the RadionSize column. According to the requirement of the company CIO, you have to optimize the query performance and reduce the effect on the disk space to the least. So what action should you perform to achieve this goal?（）
    A

    On the Products table, you should create a view. 

    B

    On the RadioSize column, you should create a clustered index 

    C

    On the RadioSize column, you should create a filtered index 

    D

    On the RadioSize column, you should create a unique clustered index


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Your database supports a DSS workload that involves the execution of complex queries: Currently, the library cache contains the ideal workload for analysis. You want to analyze some of the queries for an application that are cached in the library cache. What must you do to receive recommendations about the efficient use of indexes and materialized views to improve query performance?（）

    • A、Create a SQL Tuning Set (STS) that contains the queries cached in the library cache and run the SQL Tuning Advisor (STA) on the workload captured in the STS.
    • B、Run the Automatic Workload Repository Monitor (ADDM).
    • C、Create an STS that contains the queries cached in the library cache and run the SQL Performance Analyzer (SPA) on the workload captured in the STS.
    • D、Create an STS that contains the queries cached in the library cache and run the SQL Access Advisor on the workload captured in the STS.

    正确答案:D

  • 第14题：

    You create a table in your database that contains 50，000 rows approximately. The queries performed on the table are complex and performed on the table frequently. Which advisor helps you achieve the best performance of database for queries by recommending the appropriate indexes？（）  

    • A、SQL Access Advisor
    • B、 Memory Advisor
    • C、SQL Tuning Advisor
    • D、 Segment Advisor

    正确答案:A

  • 第15题：

    You have a very large table that your users access frequently. Which of the following advisors will recommend any indexes to improve the performance of queries against this table?（）

    • A、The Automatic Memory Manager (AMM)
    • B、The SQL Tuning Advisor
    • C、The Segment Advisor
    • D、The SQL Access Advisor

    正确答案:D

  • 第16题：

    You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database which is named Sellings in the instance. The Sellings database contains a table named Productions. The table is used to stores information about all types of products. The Productions table is often queried by users on the basis of the RadioSize column. The RadioSize column contains the NULL value for all products other than Radios. Currently no index exists on the RadionSize column. According to the requirement of the company CIO, you have to optimize the query performance and reduce the effect on the disk space to the least. So what action should you perform to achieve this goal?（）  

    • A、On the Products table, you should create a view. 
    • B、On the RadioSize column, you should create a clustered index 
    • C、On the RadioSize column, you should create a filtered index 
    • D、On the RadioSize column, you should create a unique clustered index

    正确答案:C

  • 第17题：

    You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a n On-Line Analytical Processing （OLAP） database named in the instance. The database contains a dimension table named Clients. Ever hour backup of data of the Clients table is performed. But the Clinets table contains redundant data. You must keep the disk space used to store the Clients table.  In the options below， which compression technology should you use？（）

    • A、You should use row compression 
    • B、You should use page compression 
    • C、You should use backup compression 
    • D、You should use windows NTFS file system compression

    正确答案:B

  • 第18题：

    单选题
    You have a very large table that your users access frequently.  Which of the following advisors will recommend any indexes to improve the performance of queries against this table？（）
    A

     The Automatic Memory Manager （AMM）

    B

     The SQL Tuning Advisor

    C

     The Segment Advisor

    D

     The SQL Access Advisor


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    In one of your online transaction processing （OLTP） applications， users are manipulating and querying a database table simultaneously. From the Segment Advisor， you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries. Which option would you use with the ALTER TABLE command to achieve this objective？（）
    A

     REBUILD

    B

     CASCADE

    C

     TRUNCATE

    D

     ROW MOVEMENT

    E

     SHRINK SPACE COMPACT

    F

     SHRINK SPACE CASCADE


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    You work as a database administrator for Certkiller .com. You suspect that in one of your applications the customer table is being accessed by some unauthorized users. Which option would you use to monitor the queries being executed on the customer table？（）
    A

    Monitor thealert.logfile

    B

    Enable server-side SQL tracing for user sessions

    C

    Enable fine-grained auditing for the customer table

    D

    Enable Fine-Grained Access Control （FGAC） for the customer table

    E

    Write a database trigger on the customer table on the SELECT event


    正确答案： E
    解析： 暂无解析

  • 第21题：

    多选题
    Which three tasks can be performed by using the performance Schema?（）
    A

    Finding queries that are not using indexes

    B

    Finding rows that are locked by InnoDB

    C

    Finding client connection attributes

    D

    Finding the part of a code in which a single query is spending time

    E

    Finding the size of each table


    正确答案： C,E
    解析： 暂无解析

  • 第22题：

    单选题
    You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005. You work as a database administrator for your company. A SQL Server 2005 computer is managed by you， and a database named Customers is included by the SQL Server 2005 computer. A table named CustInfo is included by the database. An identity column named CustID and an nvarchar column named CustName are included by the table. According to the company requirement， rows which duplicate CustName values are included should be moved from the CustInfo table every year. However， the company requests to have rows removed from the CustInfo table after the rows have been manually examined and verified as being duplicates. Since you are the technical support， you are required to think out a method to have potential duplicate rows identified for manual examination. The minimum amount of administrative effort should be utilized.  Which action should be performed to finish the task？（）
    A

    A trigger should be created for the CustInfo table so as to roll back INSERT queries that duplicate data is included.

    B

    A new unique index should be created on the CustName column. And then， IGNORE_DUP_KEY = ON should be specified when creating index.

    C

    On the CustName column， a foreign key constraint should be created， and a distinct list of CustName values is referenced by the foreign key constraint.

    D

    A SELECT INTO query should be utilized， and GROUP BY and HAVING clauses should be included by the query to create a new table that contains duplicate rows from the CustInfo table.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    In one of your online transaction processing （OLTP） applications， users are manipulating and querying a database table simultaneously. From the Segment Advisor， you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries.  Which option would you use with the ALTER TABLE command to achieve this objective？（）
    A

    REBUILD

    B

    CASCADE

    C

    TRUNCATE

    D

    ROW MOVEMENT

    E

    SHRINK SPACE COMPACT

    F

    SHRINK SPACE CASCADE


    正确答案： B
    解析： 暂无解析

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