LOD Flashcards

1
Q

True or False?

Datasets with more records always contain higher lvl of granularity than datasets with less records

A

False

the amount of records is not a direct indicator of the data granularity. It’s what one record of data represents that determines the level of detail of the dataset

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2
Q

True or False:

LOD expressions require the same dimensions to be present in the canvas

A

False

LOD expressions are used so that the dimensions DON’T have to be present in the canvas

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3
Q

Unlike ___ LOD expressions, ____ is sensitive to adding or removing dimensions in the view, as doing this will change the calculation.

A

FIXED
INCLUDE & EXCLUDE

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4
Q

What will happen to a FIXED LOD expression if you add/remove dimensions in the view?

A

Nothing

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5
Q

What will happen to an INCLUDE LOD expression if you add/remove dimensions in the view?

A

the calculations will change therefore the results will change

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6
Q

What will happen to an EXCLUDE LOD expression if you add/remove dimensions in the view?

A

the calculations will change therefore the results will change

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7
Q

Why would you use an EXCLUDE LOD instead of the Analysis tab for calculating subtotals?

A

B/c using the analysis tab does not allow us to further calculate the totals, for example, using the total to create a new column calculating the percentage

see image in doc.

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8
Q

Where do FIXED LODs lie in the Order of Operations

A

Context Filters then
Fixed LODs then
Dimension Filters

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9
Q

Where do Include/Exclude LODs lie in the Order of Operations

A

Dimension Filters then
Include/Exclude LOD then
Measure Filters

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10
Q

What is the full Order of Operations for Filters and LODs

A

Extract Filters
Data Source Filters
Context Filters
Fixed LOD
Dimension Filters
Exclude/Include LOD
Table Calc Filters

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11
Q

A typical use case of ___ is calculating totals & subtotals

A

Exclude

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12
Q

____ calculates at a higher LOD than the one which is present in the visualization

A

Exclude

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13
Q

Calculates at a lower LOD than the database

A

Include

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14
Q

Calculates at a finer LOD than the database

A

Include

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15
Q

___ LOD expression allows you to calculate on a finer detail of the data and re-aggregate it on the canvas on a coarser level.

A

INCLUDE

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