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单选题
You have two tables with referential integrity enforced between them. You need to insert data to the child tablefirst because it is going to be a long transaction and data for the parent table will be available in a later stage，which can be inserted as part of the same transaction. View the Exhibit to examine the commands used tocreate tables. Which action would you take to delay the referential integrity checking until the end of thetransaction（）
A
Set the constraint to deferred before starting the transaction.
B
Alter the constraint to NOVALIDATE state before starting the transaction.
C
Enable the resumable mode for the session before starting the transaction.
D
Set the COMMIT_WAIT parameter to FORCE_WAIT for the session before starting the transaction
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更多 “单选题You have two tables with referential integrity enforced between them. You need to insert data to the child tablefirst because it is going to be a long transaction and data for the parent table will be available in a later stage，which can be inserted as part of the same transaction. View the Exhibit to examine the commands used tocreate tables. Which action would you take to delay the referential integrity checking until the end of thetransaction（）A Set the constraint to deferred before starting the transaction.B Alter the constraint to NOVALIDATE state before starting the transaction.C Enable the resumable mode for the session before starting the transaction.D Set the COMMIT_WAIT parameter to FORCE_WAIT for the session before starting the transaction” 相关考题
考题
Examine the statement: Create synonym emp for hr. employees; What happens when you issue the statement? ()
A. An error is generated.B. You will have two identical tables in the HR schema with different names.C. You create a table called employees in the HR schema based on you EMP table.D. You create an alternative name for the employees table in the HR schema in your own schema.
考题
What is true about joining tables through an equijoin? ()
A. You can join a maximum of two tables through an equijoin.B. You can join a maximum of two columns through an equijoin.C. You specify an equijoin condition in the SELECT or FROM clauses of a SELECT statement.D. To join two tables through an equijoin, the columns in the join condition must be primary key and foreign key columns.E. You can join n tables (all having single column primary keys) in a SQL statement by specifying a minimum of n-1 join conditions.
考题
What is necessary for your query on an existing view to execute successfully? ()
A. The underlying tables must have data.B. You need SELECT privileges on the view.C. The underlying tables must be in the same schema.D. You need SELECT privileges only on the underlying tables.
考题
In which case would you use a FULL OUTER JOIN? ()
A. Both tables have NULL values.B. You want all unmatched data from one table.C. You want all matched data from both tables.D. You want all unmatched data from both tables.E. One of the tables has more data than the other.F. You want all matched and unmatched data from only one table.
考题
State the primary types of tables found in a data warehouse and the order which they must be loaded to enforce referential integrity.简述数据仓库中的表的基本类型，以及为了保证引用完整性该以什么样的顺序对它们进行加载。
考题
Which two roles or privileges must you have to export tables owned by another user？（）A、CREATE USERB、CREATE SESSIONC、CREATE ANY TABLED、IMP_FULL_DATABASEE、EXP_FULL_DATABASE
考题
In which three cases would you use the USING clause?（）A、You want to create a nonequijoin.B、The tables to be joined have multiple NULL columns.C、The tables to be joined have columns of the same name and different data types.D、The tables to be joined have columns with the same name and compatible data types.E、You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.
考题
In which situations does the Oracle Data Pump use external tables and not the direct path load whileexporting a table（）A、if a table is not in a clusterB、if a table has an active triggerC、if a table has an encryptedD、if a table has a column of data type LONG defined on itE、if a table has a referential integrity constraint defined on it
考题
In which two cases would you use an outer join? （）A、The tables being joined have NOT NULL columns.B、The tables being joined have only matched data.C、The columns being joined have NULL values.D、The tables being joined have only unmatched data.E、The tables being joined have both matched and unmatched data.F、Only when the tables have a primary key-foreign key relationship.
考题
What are two reasons to create synonyms?（）A、You have too many tables.B、Your tables are too long.C、Your tables have difficult names.D、You want to work on your own tables.E、You want to use another schema's tables.F、You have too many columns in your tables.
考题
You are planning to import customer data from the Customer table and the Country table in your SQL Server 2000 database into a SQL Server 2005 database. You want to ensure that during the import process，each value in the CountryCode column of the Customer table has a corresponding record in the CountryCode column in the Country table of the SQL Server 2005 database. You define a foreign key between these two tables. Thus，referential integrity will guarantee that the import routine fails if there are any records where a CountryCode value does not exist in the Country table but does exist in the Customer table. You need to ensure that the import process does not fail if records are encountered that do not exist in the Country table. What should you do？（）A、Drop the foreign key. Import the data by using the script. Re-create the foreign key.B、Create a CHECK constraint.C、Create a DML INSTEAD OF trigger that writes the failed records to a file or table.D、Create a DML AFTER trigger that writes the failed records to a file or table.
考题
You execute this command to drop the ITEM table， which has the primary key referred in the ORDERtable： SQL DROP TABLE scott.item CASCADE CONSTRAINTS PURGE； Which two statements are true about the effect of the command（）A、No flashback is possible to bring back the ITEM table.B、The ORDER table is dropped along with the ITEM table.C、The dependent referential integrity constraints in the ORDER table are disabled.D、The dependent referential integrity constraints in the ORDER table are removed.E、The table definition of the ITEM table and associated indexes are placed in the recycle bin.
考题
You need to perform an online table redefinition of an existing SALES table to partition it into two tablespaces TBS1 and TBS2. The SALES table has a materialized view， materialized log， indexes， referential integrity constraint， and triggers with the PRECEDES clause existing on it. What action is required for dependent objects when you perform online table redefinition？（） A、 The dependent materialized view should have a complete refresh performed after the online table redefinition process.B、 Triggers with the PRECEDES clause should be disabled before the online table redefinition process.C、 Referential integrity constraints must be manually enabled after the online table redefinition process.D、 The materialized log should be dropped before the online table redefinition process.
考题
What is necessary for your query on an existing view to execute successfully?（）A、The underlying tables must have data.B、You need SELECT privileges on the view.C、The underlying tables must be in the same schema.D、You need SELECT privileges only on the underlying tables.
考题
What is true about joining tables through an equijoin?（）A、You can join a maximum of two tables through an equijoin.B、You can join a maximum of two columns through an equijoin.C、You specify an equijoin condition in the SELECT or FROM clauses of a SELECT statement.D、To join two tables through an equijoin, the columns in the join condition must be primary key and foreign key columns.E、You can join n tables (all having single column primary keys) in a SQL statement by specifying a minimum of n-1 join conditions.
考题
You create a Web Form that displays a GridView. The GridViews data source is a DataSet named dsOrders. The DataSet contains two DataTables named Orders and OrderDetails. You create a relation between the two DataTables using the following code segment. (Line numbers are included for reference only.)01 dtOrders = dsOrders.Tables[“Orders”]; 02 dtOrderDetails = dsOrders.Tables[“OrderDetail”]; 03 colParent = dtOrders.Columns[“OrderID”]; 04 colChild = dtOrderDetails.Columns[“ParentOrderID”]; 05 dsOrders.Relations.Add(“Rell”, colParent, colChild, false); You need to find the cause of the exception being raised in line 05. What should you do? （）A、Ensure that the child column and the parent column have the same names.B、Ensure that the child table and the parent table have the same names.C、Ensure that the child column and the parent column have the same data types.D、Ensure that each row in the child table has a corresponding row in the parent table.E、Ensure that the tables have an explicit relationship defined by a foreign key constraint in the database.
考题
单选题Examine the statement:Create synonym emp for hr. employees;What happens when you issue the statement?（）A
An error is generated.B
You will have two identical tables in the HR schema with different names.C
You create a table called employees in the HR schema based on you EMP table.D
You create an alternative name for the employees table in the HR schema in your own schema.
考题
单选题You need to perform an online table redefinition of an existing SALES table to partition it into two tablespaces TBS1 and TBS2. The SALES table has a materialized view， materialized log， indexes， referential integrity constraint， and triggers with the PRECEDES clause existing on it. What action is required for dependent objects when you perform online table redefinition？（）A
The dependent materialized view should have a complete refresh performed after the online table redefinition process.B
Triggers with the PRECEDES clause should be disabled before the online table redefinition process.C
Referential integrity constraints must be manually enabled after the online table redefinition process.D
The materialized log should be dropped before the online table redefinition process.
考题
单选题You discover that your Recycle Bin contains two tables with the same name， MY_TABLE. You also have a table named MY_TABLE in your schema. You execute the following statement： FLASHBACK TABLE my_table TO BEFORE DROP RENAME TO my_table2； What will be the result of executing this statement？（）A
One of the tables is recovered from the Recycle Bin using a First In First Out （FIFO） approach.B
One of the tables is recovered from the Recycle Bin using a Last In First Out （LIFO） approach.C
Both the tables are recovered from the Recycle Bin with one table renamed to MY_TABLE2 and the other to a system-generated name.D
None of the tables are recovered from the Recycle Bin， and the statement returns an error.
考题
单选题You design a Business Intelligence （BI） solution by using SQL Server 2008. You plan to create a SQL Server 2008 Reporting Services （SSRS） solution. Developers generate random reports against a data source that contains 200 tables. Power users generate random reports against four of the 200 tables. You need to design a strategy for the SSRS solution to meet the following requirements： ·Uses minimum amount of development effort. ·Provides two sets of tables in SSRS to the developers group and the power users group. Which strategy should you use？（）A
Create two Report Builder models.Include the four frequently used tables in the first model and all the tables in the second model.B
Create a Report Builder model by using all the tables.Create a perspective within the model to use only the four frequently used tables.C
Create a Report Builder model by using all the tables. Create two folders.Place the four frequently used tables in the first folder and the remaining tables in the second folder.D
Create two Data Source Views.Include all the tables in one Data Source View and the four frequently used tables in the other Data Source View.Create two Report Builder models so that each model uses one of the Data Source Views.
考题
多选题Which two roles or privileges must you have to export tables owned by another user？（）ACREATE USERBCREATE SESSIONCCREATE ANY TABLEDIMP_FULL_DATABASEEEXP_FULL_DATABASE
考题
多选题In which three cases would you use the USING clause?（）AYou want to create a nonequijoin.BThe tables to be joined have multiple NULL columns.CThe tables to be joined have columns of the same name and different data types.DThe tables to be joined have columns with the same name and compatible data types.EYou want to use a NATURAL join, but you want to restrict the number of columns in the join condition.
考题
多选题In which situations does the Oracle Data Pump use external tables and not the direct path load whileexporting a table（）Aif a table is not in a clusterBif a table has an active triggerCif a table has an encryptedDif a table has a column of data type LONG defined on itEif a table has a referential integrity constraint defined on it
考题
多选题In which two cases would you use an outer join? （）AThe tables being joined have NOT NULL columns.BThe tables being joined have only matched data.CThe columns being joined have NULL values.DThe tables being joined have only unmatched data.EThe tables being joined have both matched and unmatched data.FOnly when the tables have a primary key-foreign key relationship.
考题
单选题You discover that your Recycle Bin contains two tables with the same name, MY_TABLE. You also have a table named MY_TABLE in your schema.You execute the following statement: FLASHBACK TABLE my_table TO BEFORE DROP RENAME TO my_table2; What will be the result of executing this statement?（）A
One of the tables is recovered from the Recycle Bin using a First In First Out (FIFO) approach.B
One of the tables is recovered from the Recycle Bin using a Last In First Out (LIFO) approach.C
Both the tables are recovered from the Recycle Bin with one table renamed to MY_TABLE2 and the other to a system-generated name.D
None of the tables are recovered from the Recycle Bin, and the statement returns an error.
考题
多选题You execute this command to drop the ITEM table， which has the primary key referred in the ORDERtable： SQL DROP TABLE scott.item CASCADE CONSTRAINTS PURGE； Which two statements are true about the effect of the command（）ANo flashback is possible to bring back the ITEM table.BThe ORDER table is dropped along with the ITEM table.CThe dependent referential integrity constraints in the ORDER table are disabled.DThe dependent referential integrity constraints in the ORDER table are removed.EThe table definition of the ITEM table and associated indexes are placed in the recycle bin.
考题
多选题What are two reasons to create synonyms? （）AYou have too many tables.BYour tables are too long.CYour tables have difficult names.DYou want to work on your own tables.EYou want to use another schema's tables.FYou have too many columns in your tables.
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