adplus-dvertising
frame-decoration

Question

What is the purpose of the auxiliary delete and insert columns in cracking?

a.

To store the original data values

b.

To maintain a record of deleted values

c.

To speed up query processing

d.

To store pending updates

Posted under Big Data Computing

Answer: (d).To store pending updates Explanation:The auxiliary delete and insert columns in cracking are used to store pending updates, specifically pending deletes and inserts.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. What is the purpose of the auxiliary delete and insert columns in cracking?

Similar Questions

Discover Related MCQs

Q. How does cracking manage merging pending updates into cracking columns?

Q. What is the primary motivation for the introduction of adaptive merging as a complementary technique to cracking?

Q. How are data handled in adaptive merging after they are sorted in memory with a quicksort action?

Q. What happens if a query in adaptive merging is fully covered by the results column?

Q. How does adaptive merging improve over plain cracking in terms of convergence speed?

Q. What is the main advantage of the crack-sort hybrid compared to other hybrid algorithms?

Q. How does the performance of cracking depend on the arrival order of queries?

Q. What problem does stochastic cracking aim to solve?

Q. How does stochastic cracking work to reduce the chances of leaving back big uncracked pieces?

Q. Why is concurrent access to data challenging in the context of database cracking?

Q. How does database cracking achieve concurrency control for adaptive indexing during read queries?

Q. In the context of adaptive indexing during read queries, what remains intact even when data organization changes?

Q. What is the advantage of using latching for concurrency control in adaptive indexing?

Q. Why is data loading considered a necessary step when setting up a database system?

Q. What is one of the significant costs associated with data loading in a database system?

Q. In the context of Big Data, what challenge does data loading create?

Q. What is the main challenge addressed by the adaptive loading direction in the NoDB project?

Q. Why is the external tables functionality, which attaches raw files to a database, not suitable for query processing?

Q. How does the adaptive loading direction differ from traditional data loading processes?

Q. What advantage does the NoDB project's adaptive loading approach offer in terms of data access costs?