Introduction to Database System
In a _____ a parent record type can be linked to one or more "child" record types, but a child record type can have only one parent.

Network database
Relational database
Hierarchical database
Distributed database

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Introduction to Database System
A race condition occurs when

two users of the DBMS are interacting with different files at the same time
Both of the listed here
None of the listed here
Two concurrent activities interact to cause a processing error

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