Question
Four of the following five are related to each other in
some way and thus formed a group. Choose the one which does not belong to that group?Solution
a.) LNQS: L + 2 = N + 3 = Q + 2 = S b.) RTWY: R + 2 = T + 3 = W + 2 = Y c.) DFIK: D + 2 = F + 3 = I + 2 = K d.) JKLN: J + 1 = K + 1 = L + 2 = N e.) GILN: G + 2 = I + 3 = L + 2 = N
In a star schema, what is the main advantage of using surrogate keys in fact tables?
Data cleansing is primarily concerned with:
In a data warehouse, which type of table stores quantitative data for analysis?
Which of the following is NOT a common OLAP operation?
Which of these is not a typical data warehouse characteristic?
Which of the following is used to maintain information about the structure of a data warehouse?
What is meant by 'cardinality' in data modeling?
Which of the following is a key process in ETL?
A star schema in a data warehouse consists of:
Which operation in OLAP allows selecting a single dimension from a cube?
