Q. Which of these query will display the the table given below ?

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Q. Which one of the following is the right syntax for DECODE ?

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Q. What do data warehouses support?

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Q. { (item name, color, clothes size), (item name, color), (item name, clothes size), (color, clothes size), (item name), (color), (clothes size), () }

This can be achieved by using which of the following ?

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Q. In SQL the cross-tabs are created using

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Q. The operation of moving from finer-granularity data to a coarser granularity (by means of aggregation) is called a ________

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Q. The process of viewing the cross-tab (Single dimensional) with a fixed value of one attribute is

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Q. The generalization of cross-tab which is represented visually is ____________ which is also called as data cube.

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Q. Data that can be modeled as dimension attributes and measure attributes are called _______ data.

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Q. OLAP stands for

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Q. The command ________________ such tables are available only within the transaction executing the query, and are dropped when the transaction finishes.

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Q. The functions which construct histograms and use buckets for ranking is

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Q. Suppose we are given a view tot credits (year, num credits) giving the total number of credits taken by students in each year.The query that computes averages over the 3 preceding tuples in the specified sort order is

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Q. Inorder to simplify the null value confusion in the rank function we can specify

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Q. If there are n tuples in the partition and the rank of the tuple is r , then its ________ is defined as (r −1)/(n−1) .

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Q. SELECT ID, GPA
FROM student grades
ORDER BY GPA
____________;

Inorder to give only 10 rank on the whole we should use

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Q. The __________ function that does not create gaps in the ordering.

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Q. In rank() function if one value is shared by two tuples then

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Q. Ranking of queries is done by which of the following ?

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Q. Any recursive view must be defined as the union of two subqueries: a _______ query that is nonrecursive and a __________ query.

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