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Qlik Sense Business Analyst (QSBA) exam Prep Test Questions | With Answers
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Qlik Sense Business Analyst (QSBA) exam Prep Test Questions | With Answers
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Qlik Sense Business Analyst (QSBA) examPrep Test Questions | With Answers
2 Forms of Geographical Data - ANSWER Geopoint (lat, long) and Area (polygons)
Cardinality - ANSWER Maximum number of times an instance in one entity can be
associated with instances in another (few distinct values = low cardinality)
Modality - ANSWER Minimum number of times an instance in one entity can
be associated with instances in another entity
3 Types of Entity Relationships - ANSWER One to many, many to many, one to one nc
Concatenate Tables - ANSWER a. Common fields are 100%
populated b. Good for many shared dimensions between tables
Link Tables - ANSWER Links two or more fact tables by taking all common fields out of
the original tables and placing them into a new one, contains all possible combination of
values for that set of fields, through a unique key, is associated to original tables Note:
always use distinct keyword
Granularity - ANSWER The level of depth represented by the data in a fact
or dimension table
ID Keys - ANSWER a. Perfect Key - every row contains a unique key value
b. Primary Key - all values are unique but not every row contains a key value
(subset ratio < 100) dim tables
, c. Foreign Key - a field in one table that uniquely IDs a row of another table (fact table)
e. Surrogate Key - integers that are assigned sequentially as needed to populate a key
field
Subset Ratio - ANSWER Percentage of all distinct values for a field in a table
compared to all the distinct values for that field in the entire data model
Information Density - ANSWER Indications the percentage of rows that contain a non-
null values
Methods to get rid of synthetic keys - ANSWER 1. Alias field names
2. Remove conflicting fields from one of the other tables
3. Create a complex (concatenated) key and remove those 2 conflicting fields
Method of getting rid of circular references - ANSWER 1. Concatenate tables
2. Create a link table
3. Rename a field or use qualify function
Normalized vs Denormalized Data - ANSWER Normalized - snowflake schema, less
RAM, slower calculation time
Denormalized - star schema, fast calculation time, best for QlikView
Additive Facts - ANSWER Semi-additive facts - measures that can be summed across
some dimensions but not all (checking account balances) Non-additive facts -
measures that cannot be summed (ratios)
QVD Files - ANSWER Used to extract and store data into and from QlikView/ Qlik
Sense; optimizes load time
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