Which kind of lock permits “dirty reads”?? Shared lock.|Write intent lock.|No lock.|Read lock.
举一反三
- 事务T1符合两段锁封锁法的序列是（） A: LOCK S(A)...LOCKS S(B) ...UNLOCK (B) ... UNLOCK (A) B: LOCK S(A) UNLOCK (A) LOCK S(B) UNLOCK (A) C: LOCK S(B) LOCK X(A) UNLOCK (A) LOCK S(C) D: UNLOCK (A) UNLOCK (B) LOCK X(A) LOCK X(B)
- Don’t forget to lock the door! ______ to lock the door!
- Scan the text and find the sentences containing the word "lock or the word root "lock".
- We'll _____ the gates. We'll _____ the staff.（ ） A: reduce; lock B: lock; reduce
- ADC 0809采样结束后需要通过LOCK向锁存器LATCH发出锁存信号，以便将输出口的D[7：0]8位数据锁存起来，下列程序当中能够实现数据锁存功能的是（） A: always@（posedge LOCK） if (LOCK) REGL<=D; B: always@（posedge LOCK） if (!LOCK) REGL<=D; C: always@（posedge RST） if (!LOCK) REGL<=D; D: always@（posedge RST or posedge LOCK ） if (!LOCK) REGL<=D;