Which technique is used to improve the performance of distributed query processing?Question 6Select one:A.Query fragmentationB.Data shardingC.Data IndexingD.Data encryptionE. Data normalization
Question
Which technique is used to improve the performance of distributed query processing?Question 6Select one:A.Query fragmentationB.Data shardingC.Data IndexingD.Data encryptionE. Data normalization
Solution
The technique used to improve the performance of distributed query processing is B. Data sharding.
Here's why:
A. Query fragmentation: This is not a technique used to improve performance. It's a process of breaking a single query into multiple parts, but it doesn't necessarily improve performance.
B. Data sharding: This is the correct answer. Sharding is a type of database partitioning that separates very large databases into smaller, faster, more easily managed parts called data shards. This can significantly improve the performance of distributed query processing.
C. Data Indexing: While indexing can improve query performance, it is not specific to distributed systems. It's a technique used in all types of databases to quickly locate and access the data.
D. Data encryption: This is a security measure, not a performance improvement technique.
E. Data normalization: This is a process used to organize a database into
Similar Questions
In distributed query processing, what is the main challenge addressed by query optimization?Question 7Select one:A.Ensuring data encryptionB.Increasing query complexityC.Minimizing data redundancyD.Reducing query response timeE.Maximizing data replication
What is the primary function of the global query optimizer in distributed query processing?Question 11Select one:A.To distribute queries to the appropriate local sitesB.To encrypt the query dataC.To compress the query resultsD.To maintain data consistencyE.To manage data replication
4. Indexing in a database is primarily used to speed up the data retrieval process. TrueFalse9. Sharding is a technique used to horizontally partition a database, distributing different portions of a tableacross multiple servers. TrueFalse10. In a relational database, a foreign key establishes a link between two databases. TrueFalse6. In a graph database, relationships between data entities are as important as the entities themselves. TrueFalse3. In a distributed database system, consistency can be a challenge due to the potential for network partitions and node failures.TrueFalse8. In-memory databases store and manage data in the computer's main memory (RAM) rather than on disk for faster access. TrueFalse5. A stored procedure is a set of SQL statements that can be executed as a single transaction. TrueFalse2. NoSQL databases, such as MongoDB, are always schema-less, allowing for flexible and dynamic data structures. TrueFalse7. The normalization process in database design aims to eliminate data redundancy and dependency. TrueFalse1. In a relational database, a foreign key establishes a link between two tables. TrueFalseClear selectionBackSubmitClear form
What are some advanced query optimization techniques not mentioned earlierReview LaterUsing stored procedures instead of ad-hoc queries.Utilizing query hints to force specific execution plans.Employing database partitioning for large tables.Implementing data caching mechanisms.
What is the most common approach in parallel applications?Data SequentialData PartitionData ParallelData Distributed
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.