adplus-dvertising
frame-decoration

Question

Why can you create a number of indexes for each table in a data warehouse?

a.

Because the tables are read-only

b.

Because the tables are frequently updated

c.

Because the tables have a small volume of data

d.

Because the tables have a simple structure

Answer: (a).Because the tables are read-only Explanation:In a data warehouse, tables are typically read-only, allowing for the creation of multiple indexes without incurring additional overhead for updates or deletes.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Why can you create a number of indexes for each table in a data warehouse?

Similar Questions

Discover Related MCQs

Q. What should be considered when determining the maximum number of indexes per table in a data warehouse?

Q. Why does the loading of data into a data warehouse slow down when there are a large number of indexes?

Q. What is the default indexing method in most database management systems?

Q. Why is the B-Tree index technique considered superior to other indexing techniques?

Q. What is the selectivity of a column in a table?

Q. In a B-Tree index, what type of column is most suitable?

Q. What can be done to improve the selectivity of a non-highly selective column for B-Tree indexing?

Q. What is a bitmap index?

Q. How is a bitmap index constructed for a column with distinct values?

Q. In a bitmapped index, how is the result set determined for a query with multiple predicates?

Q. What is a disadvantage of bitmapped indexes?

Q. In a data warehouse environment, when are bitmapped indexes more suitable than B-Tree indexes?

Q. What is a recommended indexing strategy for dimension tables in a data warehouse?

Q. When considering multicolumn indexes for dimension tables, what should be considered for arranging columns?

Q. Which technique enables more data to be loaded into a single block, improving data retrieval performance?

Q. What is a key advantage of data partitioning in a data warehouse?

Q. Why is planning for partitioning crucial in a data warehouse?

Q. What is the primary benefit of partitioning a table in a data warehouse?

Q. In vertical partitioning of a table, how are partitions separated?

Q. What is a benefit of horizontal partitioning in a data warehouse?