Read overhead in a Columnar database can be partly reduced by Multicolumn projection and _____________.
Sorted Column
Caching
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Scaling
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Answer:
Caching
Explanation:
Read overhead in a Columnar database can be partly reduced by Multicolumn projection and Caching. For a columnar database, fetching a single row includes gathering the row from each of the column stores for that table. This can lead to Read overhead. Multicolumn projection is to store multiple columns together on disk.
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