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) Which statement produces the number of different departments that have employees with last name Smith?()
第1题:
此题为判断题(对,错)。
第2题:
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)
第3题:
(ii) ‘job description’. (4 marks)
第4题:
_______
. A. conclusion B. description C. evaluation D. introduction
第5题:
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)
第6题:
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.
第7题:
检查
A.expect
B.except
C.excuse
D.examine
第8题:
统计描述statistical description(名词解释)
第9题:
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)
第10题: