Which is a restriction on a list partitioned table？（）A、You cannot create global range partitioned indexes on the table. B、The optimizer will not execute partition wise joins on the table’s partitions. C、You must include at least one element in the value l

第1题：

A DBA has been asked to create a table which will contain a substantial amount of detailed sales information for each calendar month and maintain it to contain only the last 12 months. Which of the following methods will facilitate the online removal of the oldest month’s data?（）

• A、Create an MQT that selects the oldest month of data with the REFRESH IMMEDIATE option.
• B、Create 12 separate tables, create a view based on all 12, drop the table with the oldest month's data then drop and re- create the view.
• C、Create a range partitioned table, partitioned by month, and use the ALTER TABLE statement to detach the oldest month and attach storage for new data.
• D、Create a single table, extract the data to be retained using UNLOAD with a SELECT statement, drop and re-create the table then load only the data to be retained.

第2题：

Which two partitioned table maintenance operations support asynchronous Global Index Maintenance inOracle database 12c?（）

• A、ALTER TABLE SPLIT PARTITION
• B、ALTER TABLE MERGE PARTITION
• C、ALTER TABLE TRUNCATE PARTITION
• D、ALTER TABLE ADD PARTITION
• E、ALTER TABLE DROP PARTITION
• F、ALTER TABLE MOVE PARTITION

第3题：

Which statements are true regarding system-partitioned tables？（）  

• A、 Only a single partitioning key column can be specified.
• B、 All DML statements must use partition-extended syntax.
• C、 The same physical attributes must be specified for each partition.
• D、 Unique local indexes cannot be created on a system-partitioned table.
• E、 Traditional partition pruning and partitionwise joins are not supported on these tables.

第4题：

In order to exploit some new storage tiers that have been provisioned by a storage administrator, the partitions of a large heap table must be moved to other tablespaces in your Oracle 12c database? Both local and global partitioned B-tree Indexes are defined on the table. A high volume of transactions access the table during the day and a medium volume of transactions access it at night and during weekends. Minimal disrupt ion to availability is required. Which three statements are true about this requirement?（）

• A、The partitions can be moved online to new tablespaces.
• B、Global indexes must be rebuilt manually after moving the partitions.
• C、The partitions can be compressed in the same tablespaces.
• D、The partitions can be compressed in the new tablespaces.
• E、Local indexes must be rebuilt manually after moving the partitions.

第5题：

Which three operations can be performed as multipartition operations in Oracle?（）

• A、Merge partitions of a list partitioned table
• B、Drop partitions of a list partitioned table
• C、Coalesce partitions of a hash-partitioned global index.
• D、Move partitions of a range-partitioned table
• E、Rename partitions of a range partitioned table
• F、Merge partitions of a reference partitioned index

第6题：

You are responsible for managing the database schema for an order entry application in a SQL Server 2005 database. After a design review, a member of the development staff asks you to add a new column named CommissionRate to the Product table. Because the actual commission rates for all products are not known at this time, each product has a default commission rate of 12 percent. The rate can be modified as necessary. You add the new column. You need to configure the table to assign the default value as efficiently as possible. What should you do?（）

• A、 Create an INSERT trigger to assign the default value to each item in the table. 
• B、 Create a CHECK constraint to validate the data and to assign the default value to each item in the table. 
• C、 Create an UPDATE trigger to update the default value for each new item in the table. 
• D、 Create a DEFAULT constraint to assign the default value specifying the WITH VALUES argument.

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第13题：

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 column
• E、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.

第14题：

You have a range-partitioned table in your database. Each partition in the table contains the sales data for a quarter.  The partition related to the current quarter is modified frequently and other partitions undergo fewer data manipulations. The preferences for the table are set to their default values. You collect statistics for the table using the following command in regular intervals： SQL> EXECUTE  DBMS_STATS.GATHER_TABLE_STATS（’SH’，’SALES’，GRANULARITY=>’GLOBAL’）；   You need statistics to be collected more quickly.  What can you do to achieve this？（）

• A、 Set DYNAMIC_SAMPLING to level 4
• B、 Set the STATISTICS_LEVEL parameter to BASIC
• C、 Set the INCREMENTAL value to TRUE for the partition table
• D、 Increase the value of STALE_PERCENT for the partition table

第15题：

You created the DEPT table by using the following command：   CREATE TABLE scott.dept   （deptno NUMBER（3），   dname VARCHAR2（15），   loc VARCHAR2（15） ）   STORAGE （INITIAL 100K NEXT 50K  MAXEXTENTS 10 PCTINCREASE 5  FREELIST GROUPS 6 FREELISTS 4）；You are required to shrink the DEPT table. While performing the shrink operation， you want to ensure that the recovered space is returned to the tablespace in which the DEPT table is stored. You do not want to shrink the indexes created on the DEPT table. What will you do to shrink the SCOTT.EMP table？（）

• A、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE COMPACT； statement.
• B、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE； statement.
• C、 Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE CASCADE； statement.
• D、 You cannot shrink the SCOTT.EMP table.

第16题：

Consider the following statement on a RANGE partitioned table: ALTER TABLE orders DROP PARTITION p1, p3; What is the outcome of executing the above statement?（）

• A、A syntax error will result as you cannot specify more than one partition in the same statement
• B、All data in p1 and p3 partitions are removed and the table definition is changed
• C、All data in p1 and p3 partitions are removed, but the table definition remains unchanged
• D、Only the first partition (p1) will be dropped as only one can be dropped at any time

第17题：

You are designing an application for Certkiller .com and you have been asked to design a database table to facilitate monthly bill generation. The bill would include details of customer calls， listed in chronological order.Which method would you follow to achieve this objective without increasing the overhead of sorting the rows？（）

• A、 create a hash cluster to store the data
• B、 create an index cluster to store the data
• C、 create a partitioned table to store the data
• D、 create a sorted hash cluster to store the data
• E、 create a heap table with rowid to store the data

第18题：

You are designing an application that will use Windows Azure Table storage to store millions of data points each day.  The application must retain each day’s data for only one week.   You need to recommend an approach for minimizing storage transactions.  What should you recommend？（）

• A、 Use a separate table for each date.  Delete eachtable when it is one week old.
• B、 Use a separate table for each week.  Delete each table when it is one week old.
• C、 Use a single table， partitioned by date.  Use Entity Group Transactions to delete data when it is one week old.
• D、 Use a single table， partitioned by week.  Use Entity Group Transactions to delete data when it is one week old.

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