Application stage BUPT "Database Principles and Applications" Job answer three zones

A multiple-choice (a total of 10 small problem, a total 100.0 points) 1. by persistent database transactions to achieve _______. A. DBMS transaction management subsystem B. Application Programmer C. DBMS concurrency control mechanism D. DBMS recovery subsystem Knowledge points: The concept Affairs Student answers: [D;] Score: [10] Questions scores: 10.0 2. consistent state of the database to be responsible _______. A. DBMS transaction management subsystem B. Application Programmer C. DBMS concurrency control mechanism D. DBMS recovery subsystem Knowledge points: The concept Affairs Student answers: [B;] Score: [10] Questions scores: 10.0 3. atomicity to ensure the completion of the _________. A. DBMS transaction management subsystem B. programmer C. DBMS concurrency control mechanism D. DBMS recovery subsystem Knowledge points: The concept Affairs Student answers: [A;] Score: [10] Questions scores: 10.0 4. Before the beginning of the transaction, the database is in a consistent state; after the end of the transaction, the database must remain in a consistent state. This refers to _____ transaction. A. Consistency B. Isolation C. endurance D. atomicity Knowledge points: The concept Affairs Student answers: [A;] Score: [10] Questions scores: 10.0 5. Once a transaction commits, its impact on the database must be permanent, regardless of system failure. This refers to ____ transaction. A. Consistency B. Isolation C. endurance D. atomicity Knowledge points: The concept Affairs Student answers: [C;] Score: [10] Questions scores: 10.0 6. The system must ensure that the impact of other concurrent transactions are not executed transactions, which refers to the ________ transaction. A. Consistency B. Isolation C. endurance D. atomicity Knowledge points: The concept Affairs Student answers: [B;] Score: [10] Questions scores: 10.0 The minimum logical unit 7. DBS running __________. A. Affairs Table B. C. Properties D. Statement Knowledge points: The concept Affairs Student answers: [A;] Score: [10] Questions scores: 10.0 8. Which of the following is not a concurrent operation of the database may lead to problems? ______ A. data leaks B. Modify loss C. read "dirty" data D. non-repeatable read Knowledge points: Concurrent operation and control Student answers: [A;] Score: [10] Questions scores: 10.0 9. Do not allow any other transactions on the targeted along with any type of lock is ______. A. shared lock B. exclusive lock C. deadlock D. Livelock Knowledge points: Locking protocol Student answers: [B;] Score: [10] Questions scores: 10.0 10 for implementing data security access control SQL statement is ______. A. CREATE INDEX B. COMMIT C. ROLLBACK D. GRANT and REVOKE Knowledge points: Database Security Student answers: [D;] Score: [10] Questions scores: 10.0

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