单项选择题

设有一个关系emp-sales(部门号,部门名,商品编号,销售数),部门号唯一标识emp-sales关系中的每一个元组。查询各部门至少销售了5中商品或者总销售数大于2000的部门号、部门名及平均销售数的SQL语句如下:HAVING or()

A.SUM(销售数)>2000    
B.SUM(销售数)>=2000           
C.SUM(’销售数’)>2000   
D.SUM(’销售数’)>=2000

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单项选择题

Murphy`s Law suggests. "If anything can go wrong. it will." Murphy has motivated numerous pearls of wisdom about projects, machines, people, and why things go wrong. A project is a (temporary) sequence of unique, complex,and connected(1)having one goal or purpose and that must be completed by a specific time, within budget, and according to (2). Project management is the (3)of scoping, planning, staffing, organizing, directing, and controlling the development of an acceptable information system at a minimum cost within a specified time frame. Project management is a cross life cycle activity because it overlaps all phases of any systems development methodology. For any systems development project, effective project management is necessary to ensure that the project meets the deadline, is developed within a(an) (4) budget, and fulfills customer expectations and specifications. Corporate rightsizing has changed the structure and culture of most organizations, and hence, project management. More flexible and temporary interdepartmental(不同部门间的) teams that are given greater responsibility and authority for the success of organizations have replaced rigid hierarchical command structures and permanent teams. Contemporary system development methodologies depend on having teams that include both technical and nontechnical users, managers, and information technologists all directed to the project goal. These (5) teams require leadership and project management.填入(1)答案()

A.activities        
B.tasks        
C.services        
D.software

单项选择题

Murphy`s Law suggests. "If anything can go wrong. it will." Murphy has motivated numerous pearls of wisdom about projects, machines, people, and why things go wrong. A project is a (temporary) sequence of unique, complex,and connected(1)having one goal or purpose and that must be completed by a specific time, within budget, and according to (2). Project management is the (3)of scoping, planning, staffing, organizing, directing, and controlling the development of an acceptable information system at a minimum cost within a specified time frame. Project management is a cross life cycle activity because it overlaps all phases of any systems development methodology. For any systems development project, effective project management is necessary to ensure that the project meets the deadline, is developed within a(an) (4) budget, and fulfills customer expectations and specifications. Corporate rightsizing has changed the structure and culture of most organizations, and hence, project management. More flexible and temporary interdepartmental(不同部门间的) teams that are given greater responsibility and authority for the success of organizations have replaced rigid hierarchical command structures and permanent teams. Contemporary system development methodologies depend on having teams that include both technical and nontechnical users, managers, and information technologists all directed to the project goal. These (5) teams require leadership and project management.填入(2)答案()

A.document       
B.order        
C.specification    
D.authority

单项选择题

Murphy`s Law suggests. "If anything can go wrong. it will." Murphy has motivated numerous pearls of wisdom about projects, machines, people, and why things go wrong. A project is a (temporary) sequence of unique, complex,and connected(1)having one goal or purpose and that must be completed by a specific time, within budget, and according to (2). Project management is the (3)of scoping, planning, staffing, organizing, directing, and controlling the development of an acceptable information system at a minimum cost within a specified time frame. Project management is a cross life cycle activity because it overlaps all phases of any systems development methodology. For any systems development project, effective project management is necessary to ensure that the project meets the deadline, is developed within a(an) (4) budget, and fulfills customer expectations and specifications. Corporate rightsizing has changed the structure and culture of most organizations, and hence, project management. More flexible and temporary interdepartmental(不同部门间的) teams that are given greater responsibility and authority for the success of organizations have replaced rigid hierarchical command structures and permanent teams. Contemporary system development methodologies depend on having teams that include both technical and nontechnical users, managers, and information technologists all directed to the project goal. These (5) teams require leadership and project management.填入(3)答案()

A.process         
B.activity      
C.step           
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单项选择题

Murphy`s Law suggests. "If anything can go wrong. it will." Murphy has motivated numerous pearls of wisdom about projects, machines, people, and why things go wrong. A project is a (temporary) sequence of unique, complex,and connected(1)having one goal or purpose and that must be completed by a specific time, within budget, and according to (2). Project management is the (3)of scoping, planning, staffing, organizing, directing, and controlling the development of an acceptable information system at a minimum cost within a specified time frame. Project management is a cross life cycle activity because it overlaps all phases of any systems development methodology. For any systems development project, effective project management is necessary to ensure that the project meets the deadline, is developed within a(an) (4) budget, and fulfills customer expectations and specifications. Corporate rightsizing has changed the structure and culture of most organizations, and hence, project management. More flexible and temporary interdepartmental(不同部门间的) teams that are given greater responsibility and authority for the success of organizations have replaced rigid hierarchical command structures and permanent teams. Contemporary system development methodologies depend on having teams that include both technical and nontechnical users, managers, and information technologists all directed to the project goal. These (5) teams require leadership and project management.填入(4)答案()

A.predefined      
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单项选择题

Murphy`s Law suggests. "If anything can go wrong. it will." Murphy has motivated numerous pearls of wisdom about projects, machines, people, and why things go wrong. A project is a (temporary) sequence of unique, complex,and connected(1)having one goal or purpose and that must be completed by a specific time, within budget, and according to (2). Project management is the (3)of scoping, planning, staffing, organizing, directing, and controlling the development of an acceptable information system at a minimum cost within a specified time frame. Project management is a cross life cycle activity because it overlaps all phases of any systems development methodology. For any systems development project, effective project management is necessary to ensure that the project meets the deadline, is developed within a(an) (4) budget, and fulfills customer expectations and specifications. Corporate rightsizing has changed the structure and culture of most organizations, and hence, project management. More flexible and temporary interdepartmental(不同部门间的) teams that are given greater responsibility and authority for the success of organizations have replaced rigid hierarchical command structures and permanent teams. Contemporary system development methodologies depend on having teams that include both technical and nontechnical users, managers, and information technologists all directed to the project goal. These (5) teams require leadership and project management.填入(5)答案()

A.invariable      
B.fixed         
C.permanent     
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