For data transmission to be successful，sending and receiving devices must follow a set of

The data to be recorded on this sheet _____ the performance of the engine.

When should data be set to disk for safekeeping during the ETL？简述ETL过程中哪个步骤应

When data（) , it has to be analyzed to decide what it all means.

Data can be（75) to another part of the spreadsheet. The original data remains.A．copied and

● Data can be （74) to another part of the spreadsheet. The original data remains. （74）A. c

Which word can be used to describe the data that