Examine the description of the EMPLOYEES table: EMP_ID NUMBER(4) NOT NULL LAST_NAME VARCHAR2(30) NOT NULL FIRST_NAME VARCHAR2(30) DEPT_ID NUMBER(2) JOB_CAT VARCHARD2(30) SALARY NUMBER(8,2) Which statement shows the maximum salary paid in each job category of each department?（）A、SELECT dept_id, job_cat, MAX(salary) FROM employees WHERE salary MAX (salary);B、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id,job_cat;C、SELECT dept_id, job_cat, MAX(salary) FROM employees;D、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id;E、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept _ id job _ cat salary;
Examine the description of the EMPLOYEES table: EMP_ID NUMBER(4) NOT NULL LAST_NAME VARCHAR2(30) NOT NULL FIRST_NAME VARCHAR2(30) DEPT_ID NUMBER(2) JOB_CAT VARCHARD2(30) SALARY NUMBER(8,2) Which statement shows the maximum salary paid in each job category of each department?（）
- A、SELECT dept_id, job_cat, MAX(salary) FROM employees WHERE salary > MAX (salary);
- B、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id,job_cat;
- C、SELECT dept_id, job_cat, MAX(salary) FROM employees;
- D、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id;
- E、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept _ id job _ cat salary;
相关考题：
UiSelector的description()查找属性content－description为指定字符串的UI元素并返回UiSelector,要求字符串必须完全匹配。() 此题为判断题(对，错)。
Examine the description of the MARKS table:SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects.Examine this SELECT statement based on the MARKS table:What is the result of the SELECT statement?（）A. The statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject.B. The statement returns an error at the SELECT clause.C. The statement returns an error at the WHERE clause.D. The statement returns an error at the ORDER BY clause.
Examine the description of the STUDENTS table:Which two aggregate functions are valid on the START_DATE column?() A. SUM(start_date)B. AVG(start_date)C. COUNT(start_date)D. AVG(start_date, end_date)E. MIN(start_date)F. MAXIMUM(start_date)
YouneedtodesignthestorageoftheapplicationtextsforUIelementstofulfilltherequirements.Whichtableandcolumndesignshouldyouuse?() A.Languages(LanguageID,Name)Elements(ElementID,Description)ElementLanguages(ElementID,LanguageID,Text)B.Languages(LanguageID,Name)Elements(ElementID,LanguageID,Description,Text)C.Languages(LanguageID,Name)ElementTexts(LanguageID,Text)ElementDescriptions(ElementID,Description)D.Languages(LanguageID,Name)Elements(ElementID,Description,Text)
面向服务系统构建过程中，（ ）用于实现Web服务的远程调用，（ ）用来将分散的、功能单一的Web服务组织成一个复杂的有机应用。A.UDDI（Universal Description，Discovery and Integration） B.WSDL（Web Service Description Language)C.SOAP（Simple Object Access Protocol）D.BPEL（Business Process Execution Language） A.UDDI（Universal Description，Discovery and Integration）B.WSDL（Web Service Description Language） C.SOAP（Simple Object Access Protocol）D.BPEL（Business Process Execution Language）
The description about the murderer was pretty vague.A:impreciseB:conciseC:unpolishedD:elementary
网页的META标签是指（）A、title、h1、keywordsB、description、alt、keywordsC、robots、keywords、descriptionD、keywords、description、h2
You need to change the definition of an existing table. The COMMERCIALS table needs its DESCRIPTION column changed to hold varying length characters up to 1000 bytes. The column can currently hold 500 bytes per value. The table contains 20000 rows. Which statement is valid?（）A、ALTER TABLE commercials MODIFY (description CHAR2(1000));B、ALTER TABLE commercials CHANGE (description CHAR2(1000));C、ALTER TABLE commercials CHANGE (description VARCHAR2(1000));D、ALTER TABLE commercials MODIFY (description VARCHAR2(1000));E、You cannot increase the size of a column if the table has rows.
The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.A、CustomsB、The ministry of commerceC、The state councilD、the commodity inspection institution
Your alert log file has the following information： Tue May 25 17：43：38 2004 ORA-00060： Deadlock detected. More info in file /u01/app/oracle/admin/ORCL/udump/orcl_ora_3173.trc. What would you do to ensure that database is still running correctly？（）A、examine the trace file and kill the session that caused the deadlockB、examine the trace file and kill both the sessions responsible for the deadlockC、examine the trace file for details and ask the user who caused the deadlock to roll back the transactionD、examine the trace file for details and remember that deadlocks are resolved automatically by Oracle databaseE、examine the trace file for details and use the Undo Advisor to rollback the transaction that caused the deadlock
Your network consists of a single Active Directory domain that contains two domain controllers. Both domain controllers run Windows Server 2003 Service Pack 2 (SP2). Auditing of successful account logon events is enabled on all computers in the domain. You need to identify the last time a specific user logged on to the domain. What should you do? （）A、Examine the System Event Log on the user’s computer.B、Examine the System Event Log on both domain controllers.C、Examine the Security Event Log on both domain controllers.D、Examine the Application Event Log on the user’s computer.
单选题What’s the passage about?AA description of an English book.BA description of an English course.CA description of life in Los Angeles.DA description of weekend visits to San Francisco.
单选题The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.ACustomsBThe ministry of commerceCThe state councilDthe commodity inspection institution
单选题Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects. Examine this SELECT statement based on the MARKS table: SELECT subj1+subj2 total_marks, std_id FROM marks WHERE subj1 AVG(subj1) AND subj2 AVG(subj2) ORDER BY total_ marks; What is the result of the SELECT statement?（）AThe statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject.BThe statement returns an error at the SELECT clause.CThe statement returns an error at the WHERE clause.DThe statement returns an error at the ORDER BY clause.
单选题You need to change the definition of an existing table. The COMMERCIALS table needs its DESCRIPTION column changed to hold varying length characters up to 2000 bytes. The column can currently hold 1000 bytes per value. The table contains 20000 rows. Which statement is valid?（）AALTER TABLE commercials MODIFY (description CHAR2(2000));BALTER TABLE commercials CHANGE (description CHAR2(2000));CALTER TABLE commercials CHANGE (description VARCHAR2 (2000));DALTER TABLE commercials MODIFY (description VARCHAR2 (2000));EYou cannot increase the size of a column if the table has rows.
单选题You need to design the storage of the application texts for UI elements to fulfill the requirements. Which table and column design should you use?（）ALanguages (LanguageID, Name)Elements (ElementID, Description)ElementLanguages (ElementID, LanguageID, Text) BLanguages (LanguageID, Name)Elements (ElementID, LanguageID, Description, Text) CLanguages (LanguageID, Name)ElementTexts (LanguageID, Text)ElementDescriptions (ElementID, Description) DLanguages (LanguageID, Name)Elements (ElementID, Description, Text)
多选题Examine the description of the STUDENTS table: STD_ID NUMBER(4) COURSE_ID VARCHAR2(10) START_DATE DATE END_DATE DATE Which two aggregate functions are valid on the START_DATE column? （ ）ASUM（start_date）BAVG（start_date）CCOUNT（start_date）DAVG（start_date，end_date）EMIN（start_date）FMAXIMUM（start_date）