A dynamic cursor saves primary key values when the cursor is opened and retrieves the values for each row as the application program accesses it.
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Q27: Repeatable Read isolation is the most restrictive
Q28: In two-phase locking,all locks are obtained during
Q29: Nonrepeatable reads occur when a transaction rereads
Q30: The goal of database security is to
Q31: Transaction level consistency means that all rows
Q33: With optimistic locking,the assumption is made that
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