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【单选题】
Which are the drawbacks of the workgroup databases as described by the writer?A.
a . Many data management issues can be introduced, such as data security and data integrity with concurrent user data updating.
B.
b. It is possible to generate many databases, since an organization is composed of many workgroups, and an individual may be part of many different workgroups at the same or different times,
C.
c. The data of workgroup databases are not easily shared with other users in the workgroup.
D.
d.a and b.
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