【判断题】Work Flow控制Data Flow的逻辑流程,Data Flow定义物理ETL操作
【单选题】Sally has a busy ________, so she has much ________ to do every day. A. work; work B. job; work C. job; job D. work; job
【单选题】This is _____ interesting _____. [ ]
【判断题】Job由Work flow和Data flow构成
【单选题】_______ show the data or information flow within an information system; the data is traced from its origin through processing, storage, and output.
A.
Top-down analysis methods
【单选题】( ) are four elements of data flow diagram.
A.
process, data flow, data store, external entity
B.
process, data flow, data table, entity
C.
process, data arrow, data table, entity
D.
process, data flow, relationship, external entity
【单选题】Processes on a data flow diagram:
A.
transform incoming data into outgoing information.
B.
represent the system boundaries.
C.
represent the work that a specific user performs.
D.
change the nature of the relationships on an entity-relationship diagram.
【单选题】I have a _____ , I _______ at a TV station.
【单选题】Do you have a _____?--- Yes, I _____ at a clothes shop.