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单选题
Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）
A
The cursor is only protected from updates and deletes by concurrent applications.
B
The row is only protected from positioned updates and deletes that reference another cursor of the same application.
C
The cursor is protected from positioned updates and deletes that reference another cursor of a different application.
D
The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.
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更多 “单选题Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）A The cursor is only protected from updates and deletes by concurrent applications.B The row is only protected from positioned updates and deletes that reference another cursor of the same application.C The cursor is protected from positioned updates and deletes that reference another cursor of a different application.D The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.” 相关考题
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Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）A、The cursor is only protected from updates and deletes by concurrent applications.B、The row is only protected from positioned updates and deletes that reference another cursor of the same application.C、The cursor is protected from positioned updates and deletes that reference another cursor of a different application.D、The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.
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考题
单选题Which of the following best describes how locks are used in DB2?（）A
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单选题The opening of cursor CSR01 produces the following result set: STUDENT LASTNM FIRSTNM CLASSNO 123 Brown John T100 213 Bailey James T100 312 Carter Arlene T210 465 Chas Devon T305 546 Davis Steven T405 If this Fetch statement is executed: FETCH csr01 INTO :studnum, :firstname, :lastname, :class Which of the following DELETE statements will cause this row to be deleted?（）A
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考题
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VTP updates are ignored and forwarded out all ports.B
VTP updates are ignored and forwarded out trunks only.C
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VTP updates are ignored and are not forwarded.
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It creates a natural join of tables T1 and T2 for all columns that have the same name. C
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DELETE FROM tab01 FOR CURRENT csr01 WITH RSC
DELETE * FROM tab01 WHERE CURRENT csr01 WITH CSD
DELETE FROM tab01 WHERE CURRENT OF csr01 WITH RR
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SSLB
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单选题Which of the following is TRUE for the DB2 isolation level Cursor Stability (CS)?（）A
An application process acquires at least a share lock on the current row of every cursor.B
Any row that is read during a unit of work cannot be changed by other application processes until the unit of work is complete.C
Any row changed by another application process can be read, even if the change has not been committed by that application process.D
An application process that issues the same query more than once in a unit of work will not see additional rows caused by other application processes appending new information to the database.
考题
单选题Consider the following: Which statement best describes the meaning of the value for the key_len column?（）A
It shows the total size of the index rowB
It shows how many columns in the index are examinedC
It shows the number of characters indexed in the keyD
It shows how many bytes will be used from each index row
考题
单选题Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）A
The cursor is only protected from updates and deletes by concurrent applications.B
The row is only protected from positioned updates and deletes that reference another cursor of the same application.C
The cursor is protected from positioned updates and deletes that reference another cursor of a different application.D
The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.
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