Computers and Technology, 20.10.2020 20:01 skoroneos551
Suppose a database manager were to allow nesting of one transaction inside another. That is, after having updated part of one record, the DBMS would allow you to select another record, update it, and then perform further updates on the first record. What effect would nesting have on the integrity of a database? Suggest a mechanism by which nesting could be allowed.
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