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【多选题】

Examine the query and its output executed In an RDBMS Instance:Which three statements are true about the users (other than sys) in the output?（）

A、The C # # B_ADMIN user can perform all backup and recovery operations using RMAN only.

B、The C # # C_ADMIN user can perform the data guard operation with Data Guard Broker.

C、The C # # A_ADMIN user can perform wallet operations.

D、The C # # D_ADMIN user can perform backup and recovery operations for Automatic Storage Management (ASM).

E、The C # # B_ADMIN user can perform all backup and recovery operations using RMAN or SQL* Plus.

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更多“Examine the query and its output executed In an RDBMS Instance:Which three statements are true about the users (other than sys) in the output?（）”相关的问题
第1题
[] Examine the data from the ORDERS and CUSTOMERS tables. Evaluate the SQL statement: What is the result when the query is executed?（） Examine the data from the ORDERS and CUSTOMERS tables. Evaluate the SQL statement: What is the result when the query is executed?（）

A、A.
B.
C.
D. The query fails because the subquery returns more than one row.
E. The query fails because the outer query and the inner query are using different tables.  

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第2题
[单选题] What is true regarding subqueries?（）

A、The inner query always sorts the results of the outer query.  B、The outer query always sorts the results of the inner query.  C、The outer query must return a value to the inner query.  D、The inner query returns a value to the outer query.  E、The inner query must always return a value or the outer query will give an error.  

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第3题
[单选题] What is true regarding subqueries?（）

A、The inner query always sorts the results of the outer query  B、The outer query always sorts the results of the inner query  C、The outer query must return a value to the outer query  D、The inner query returns a value to the outer query  E、The inner query must always return a value or the outer query will give an error  

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第4题
[] What is true regarding subqueries?（）

A、A. The inner query always sorts the results of the outer query  B、B. The outer query always sorts the results of the inner query  C、C. The outer query must return a value to the outer query  D、D. The inner query returns a value to the outer query  E、E. The inner query must always return a value or the outer query will give an error  

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第5题
[单选题] EXHIBIT, Emp Table Exhibit A Exhibit B Examine the data from the EMP table. Evaluate this SQL statement: SELECT * FROM emp WHERE emp _ id = 3); WHERE commission = (SELECT commission FROM emp What is the result when the query is executed?（）

A、Exhibit A  B、Exhibit B  C、The query returns no rows  D、The query fails because the outer query is retrieving more than one column  E、The query fails because both the inner and outer queries are retrieving data from the same table.  

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第6题
[单选题] Examine the following commands and their output: View the exhibit and examine the Flashback Version Query that was executed after the preceding commands. What could be the possible cause for the query not displaying any row?（）

A、Flashback logging is not enabled for the database.  B、The changes made to the table are not committed.  C、Supplemental logging is not enabled for the database.  D、The database is not configured in ARCHIVELOG mode.  

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第7题
[单选题] A database exists as a read-intensive server that is operating with query_cachek_type =DEMAND. The database is refreshed periodically, but the resultset size of the queries does not fluctuate. Note the following details about this environment: A web application uses a limited set of queries. The Query Cache hit rate is high. All resultsets fit into the Query Cache. All queries are configured to use the Query Cache successfully. The response times for queries have recently started to increase. The cause for this has correctly been identified as the increase in the number of concurrent users accessing the web service. Based solely on the information provided, what is the most likely cause for this slowdown at the database level?（）

A、The Query Cache is pruning queries due to an increased number of requests  B、Query_cache_min_res_unit has been exceeded, leading to an increased performance overhead due to additional memory block lookups  C、Mutex contention on the Query Cache is forcing the queries to take longer due to its singlethreaded nature  D、The average resultset of a query is increasing due to an increase in the number of users requiring SQL statement execution  

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第8题
[单选题] 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.  

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第9题
[单选题] You define a multiple-row subquery in the WHERE clause of an SQL query with a comparison operator "=".What happens when the main query is executed?（）

A、The main query executes with the first value returned by the subquery.  B、The main query executes with the last value returned by the subquery.  C、The main query executes with all the values returned by the subquery.  D、The main query fails because the multiple-row subquery cannot be used with the comparison operator.  E、You cannot define a multiple-row subquery in the WHERE clause of a SQL query.  

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第10题
[单选题] You define a multiple-row subquery in the WHERE clause of an SQL query with a comparison operator "=".What happens when the main query is executed?（）

A、The main query executes with the first value returned by the subquery.  B、The main query executes with the last value returned by the subquery.  C、The main query executes with all the values returned by the subquery.  D、The main query fails because the multiple-row subquery cannot be used with the comparison operator.  E、You cannot define a multiple-row subquery in the WHERE clause of a SQL query.  

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