Cognos - Factless Fact Table

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Factless Fact Table

Explain with an example for Factless Fact Table in Real Time Project ?

Total Answers and Comments: 2

Last Update: August 12, 2008 Asked by: dontisuresh

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Submitted by: kranthi.kunta

Factless Fact Table: A fact table with a key section but without a measure section.Â There are 2 types of factless fact table:

1. Event Tracking Tables: A table that records an event. Ex: A table that records student attendance.Â It contains date_key, student_key, teacher_key, course_key and without measure section.

2. Coverage Tables: A table to answer questions about things that didn't happen.Â Ex: An ordinary fact table canot answer questions like "Which products were on promotion that did not sell?", because it contains only the records of products that did sell. A table contains date_key, product_key, store_key, promo_key and without measure section is used to answer such questions.

Above answer was rated as good by the following members:
sandeep8000861

July 18, 2008 22:04:52

shree_uday

Member Since: April 2008 Contribution: 14

RE: Factless Fact Table

A Fact table without any measures is called Factless Fact Table.For Ex.Survive Fact Table

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August 12, 2008 09:41:30

kranthi.kunta

Member Since: April 2008 Contribution: 15

RE: Factless Fact Table

Factless Fact Table: A fact table with a key section but without a measure
section. There are 2 types of factless fact table:

1. Event Tracking Tables: A table that records an event. Ex: A table
that records student attendance. It contains date_key student_key
teacher_key course_key and without measure section.

2. Coverage Tables: A table to answer questions about things that
didn't happen. Ex: An ordinary fact table canot answer questions like
Which products were on promotion that did not sell? because it contains only
the records of products that did sell. A table contains date_key product_key
store_key promo_key and without measure section is used to answer such
questions.

Is this answer useful? Yes | No

1 0

Overall Rating: +1

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