Introduction to Database System
Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?

ID-dependent entity
Strong entity
Weak entity
ID-independent entity

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Introduction to Database System
With respect to data input, the most accurate description of batch control is

dividing documents to be entered into batches
comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system
controlling the input of each input clerk
All of these
None of these

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