Explanation: A distributed lock manager (provides distributed software applications with a means to synchronize their accesses to shared resources. 9. The ____ lock allows concurrent transactions to access the same row as long as they require the use of different fields within that row.
A. Table-level
B. Page-level
C. Row-level
D. Field-level
Answer:A
Explanation: A distributed lock manager (provides distributed software applications with a means to synchronize their accesses to shared resources. 9. The ____ lock allows concurrent transactions to access the same row as long as they require the use of different fields within that row.
A. Table-level B. Page-level C. Row-level D. Field-level
Explanation: Lock is limited to the attributes of the relation. 10. Which of the following is a procedure for acquiring the necessary locks for a transaction where all necessary locks are acquired before any are released?