Which of the following is the reason behind the quick responsiveness of online analytical processing (OLAP)?
a. Matching a user’s query to many sources of information
b. The pre-aggregation of detailed data into useful data summaries
c. Performing operations on data based on user defined formulas
d. An Interactive examination of high-level summary data
b. The pre-aggregation of detailed data into useful data summaries
The key to the quick responsiveness of online analytical processing (OLAP) processing is the pre-aggregation of detailed data into useful data summaries in anticipation of questions that might be raised. For example, data cubes can be built to summarize unit sales of a specific item on a specific day for a specific store.
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A(n) ________ selects all of the records from one database table and only those records in the second table that have matching values in the joined field
Fill in the blank(s) with correct word
Each argument represents an item of information that is passed to the procedure when the procedure is invoked.
Answer the following statement true (T) or false (F)