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1Z0-047 问题列表
问题
多选题Which three possible values can be set for the TIME_ZONE session parameter by using the ALTER SESSION command？ （）AosBlocalC-8：00Ddbtimezone LiEAustralia
问题
单选题Which statement is true regarding Flashback Version Query？（）A
It returns versions of rows only within a transaction.B
It can be used in subqueries contained only in a SELECT statement.C
It will return an error if the undo retention time is less than the lower bound time or SCN specified.D
It retrieves all versions including the deleted as well as subsequently reinserted versions of the rows.
问题
单选题View the Exhibit and examine the structure of the EMP table. You executed the following command to add a primary key to the EMP table： ALTER TABLE emp ADD CONSTRAINT emp_id_pk PRIMARY KEY （emp_id） USING INDEX emp_id_idx； Which statement is true regarding the effect of the command？（）A
The PRIMARY KEY is created along with a new index.B
The PRIMARY KEY is created and it would use an existing unique index.C
The PRIMARY KEY would be created in a disabled state because it is using an existing index.D
The statement produces an error because the USING clause is permitted only in the CREATE TABLE command.
问题
多选题Which three possible values can be set for the TIME_ZONE session parameter by using the ALTER SESSION command？（）A’os’BlocalC-8：00’Ddbtimezone LiE’Australia’
问题
单选题View the Exhibit and examine the structure of the ORDERS and ORDERJTEMS tables. Evaluate the following SQL statement： SELECT oi.order_id， product_jd， order_date FROM order_items oi JOIN orders o USING （order_id）； Which statement is true regarding the execution of this SQL statement？（）A
The statement would not execute because table aliases are not allowed in the JOIN clause.B
The statement would not execute because the table alias prefix is not used in the USING clause.C
The statement would not execute because all the columns in the SELECT clause are not prefixed with table aliases.D
The statement would not execute because the column part of the USING clause cannot have a qualifier in the SELECT list.
问题
单选题View the Exhibit and examine the data in ORDERS_MASTER and MONTHLYjDRDERS tables. What would be the outcome of the above statement？（）A
The ORDERS_MASTER table would contain the ORDERJDs 1 and 2.B
The ORDERS_MASTER table would contain the ORDERJDs 1， 2 and 3.C
The ORDERS_MASTER table would contain the ORDERJDs 1， 2 and 4.D
The ORDERS MASTER table would contain the ORDER IDs 1， 2， 3 and 4.
问题
多选题Which three statements are true regarding single-row functions？（）AThey can accept only one argument.BThey can be nested up to only two levels.CThey can return multiple values of more than one data type.DThey can be used in SELECT， WHERE， and ORDER BY clauses.EThey can modify the data type of the argument that is referenced.FThey can accept a column name， expression， variable name， or a user-supplied constant as arguments.
问题
单选题The user SCOTT who is the owner of ORDERS and ORDERJTEMS tables issues the following GRANT command： GRANT ALL ON orders， order_items TO PUBLIC； What correction needs to be done to the above statement？ （）A
PUBLIC should be replaced with specific usernames.B
ALL should be replaced with a list of specific privileges.C
WITH GRANT OPTION should be added to the statement.D
Separate GRANT statements are required for ORDERS and ORDERJTEMS tables.
问题
多选题Which three tasks can be performed using regular expression support in Oracle Database 10g？（）Ait can be used to concatenate two strings.Bit can be used to find out the total length of the string.Cit can be used for string manipulation and searching operations.Dit can be used to format the output for a column or expression having string data.Eit can be used to find and replace operations for a column or expression having string data.
问题
单选题Evaluate the CREATE TABLE statement： CREATE TABLE products （product_id NUMBER （6） CONSTRAINT prod_id_pk PRIMARY KEY， product_name VARCHAR2 （15））； Which statement is true regarding the PROD_ID_PK constraint？（）A
It would be created only if a unique index is manually created first.B
It would be created and would use an automatically created unique index.C
It would be created and would use an automatically created nonunique index.D
It would be created and remains in a disabled state because no index is specified in the command.
问题
单选题Which statement is true regarding Flashback Version Query？ （）A
It returns versions of rows only within a transaction.B
It can be used in subqueries contained only in a SELECT statement.C
It will return an error if the undo retention time is less than the lower bound time or SCN specified.D
It retrieves all versions including the deleted as well as subsequently reinserted versions of the rows.
问题
单选题View the Exhibit and examine the structure of the ORDERS table. Which task would require subqueries？ （）A
displaying the total order value for sales representatives 161 and 163B
displaying the order total for sales representative 161 in the year 1999C
displaying the number of orders that have order mode online and order date in 1999D
displaying the number of orders whose order total is more than the average order total for all online orders
问题
单选题Evaluate the following SQL statements that are issued in the given order： What would be the status of the foreign key EMP_MGR_FK？（）A
It would be automatically enabled and deferred.B
It would be automatically enabled and immediate.C
It would remain disabled and has to be enabled manually using the ALTER TABLE command.D
It would remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.
问题
多选题Which statements are correct regarding indexes？ （）AWhen a table is dropped， the corresponding indexes are automatically dropped.BFor each DML operation performed， the corresponding indexes are automatically updated.CIndexes should be created on columns that are frequently referenced as part of an expression.DA non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a uniqueindex.
问题
多选题Which three tasks can be performed using regular expression support in Oracle Database 10g？（）Ait can be used to concatenate two strings.Bit can be used to find out the total length of the string.Cit can be used for string manipulation and searching operations.Dit can be used to format the output for a column or expression having string data.Eit can be used to find and replace operations for a column or expression having string data.