网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
SQL是哪几个英文单词的缩写?
A．Standard Query Language
B．Structured Query Language
C．Select QueryL anguage
D．以上都不是
参考答案
更多 “ SQL是哪几个英文单词的缩写?A．Standard Query LanguageB．Structured Query LanguageC．Select QueryL anguageD．以上都不是 ” 相关考题
考题
You have an SQL query that takes one minute to execute. You use the following code segment to execute theSQL query asynchronously.Dim ar As IAsyncResult = cmd.BeginExecuteReader()You need to execute a method named DoWork() that takes one second to run while the SQL query is executing.DoWork() must run as many times as possible while the SQL query is executing.Which code segment should you use?（）A.B.C.D.
考题
Examine the data from the ORDERS and CUSTOMERS tables.Evaluate the SQL statement:What is the result when the query is executed?()
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.
考题
A new report process containing a complex query is written, with high impact on the database. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.What should you do to accomplish this task?（）A. Execute the query and view Active Session History (ASH) for information about the query.B. Enable SQL trace for the query.C. Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report.D. Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.
考题
SQL是 ______的缩写。A．Standard Query LanguageB．Structured Query LanguageC．Select Query LanguageD．以上都不是
考题
SQL是哪几个英语单词的缩写（）A、Standard Query LanguageB、Structured Query LanguageC、Select Query LanguageD、其他三项都不是
考题
关于mysql_db_query与mysql_query说法正确的是：（）A、mysql_db_query与mysql_query在执行sql语句后的返回值是一样的，成功返回资源号，失败返回FALSEB、不能用mysql_query函数临时在另一个数据库上执行sql语句，而mysql_db_query可以C、mysql_db_query不会切换回先前连接到的数据库D、mysql_query在功能上等于mysql_select_db（）+mysql_db_query（）
考题
Which of the following statements best describes Flashback Versions Query？（） A、 Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.B、 Flashback Versions Query is used to view all version changes on rows that existed between the time the query was executed and a point in time in the past.C、 Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.D、 Flashback Versions Query is used to view all version changes on rows that existed between two points in time.
考题
SQL是那几个英文单词的缩写（）A、Standard Query LanguageB、Structured Query LanguageC、Select Query LanguageD、以上都不是
考题
SQL是（）英文单词的缩写。A、Structured Query LanguageB、Standard Query LanguageC、Select Query LanguageD、以上都不是
考题
关系数据库标准语言SQL是哪一项的缩写形式？（）A、Structured Query LanguageB、Standard Query LanguageC、Selected Query LanguageD、Seeking Query Language
考题
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.
考题
单选题SQL是（）英文单词的缩写。A
Structured Query LanguageB
Standard Query LanguageC
Select Query LanguageD
以上都不是
考题
单选题You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance？（）A
run Segment AdvisorB
run SQL Tuning Advisor on top SQL statementsC
run the Automatic Workload Repository （AWR） reportD
run the Automatic Database Diagnostic Monitor （ADDM）on top SQL statements
考题
单选题Which of the following statements best describes Flashback Versions Query？（）A
Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.B
Flashback Versions Query is used to view all version changes on rows that existed between the time the query was executed and a point in time in the past.C
Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.D
Flashback Versions Query is used to view all version changes on rows that existed between two points in time.
考题
单选题A new report process containing a complex query is written, with high impact on the database. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests. For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING. What should you do to accomplish this task?（）A
Execute the query and view Active Session History (ASH) for information about the query.B
Enable SQL trace for the query.C
Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report.D
Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.
考题
单选题SQL是那几个英文单词的缩写（）A
Standard Query LanguageB
Structured Query LanguageC
Select Query LanguageD
以上都不是
考题
单选题SQL是哪几个英语单词的缩写（）A
Standard Query LanguageB
Structured Query LanguageC
Select Query LanguageD
其他三项都不是
考题
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.
考题
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 AB
Exhibit BC
The query returns no rowsD
The query fails because the outer query is retrieving more than one columnE
The query fails because both the inner and outer queries are retrieving data from the same table.
考题
填空题SQL是Structured Query Language（）的缩写。
热门标签
最新试卷