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Difference between Fact table and Dimension table?
WEBMay 8, 2023 · The fact table mainly consists of business facts and foreign keys that refer to primary keys in the dimension tables. A dimension table consists mainly of descriptive attributes that are textual fields. A …
Database - fact table and dimension table - Stack Overflow
WEBMar 30, 2012 · Dimension and Fact are key terms in OLAP database design. Fact table contains data that can be aggregate. Measures are aggregated data expressions (e. …
Database warehouse design: fact tables and …
WEBAug 13, 2016 · Tables dimGeography and dimDemographic are so-called mini-dimensions; they allow for slicing based on demographic and geography without having to join dimUser, and also to capture user's …
- Question & Answer
do I need to define Fact Table or the Dimension tables?
WEBJul 18, 2014 · This will lead you to conclusion that you need to have dimensions and facts already in place. This is right and wrong. You might find that it is impossible to gather all …
Setting up Dim and Fact tables for a Data Warehouse
WEBSep 15, 2016 · You need to start by identifying all your facts, grouping them into fact tables, identifying individual dimensions on each fact table and then grouping them as …
data warehouse - Fact table and Dimension tables
WEBNov 4, 2018 · A typical machine learning data consist of measurements or events, which can be interpreted as a single fact table. The numerical attributes (such as price or points) are the measurment attributes of the …
- People also ask
Difference among Dimension, Dimension attribute and Facts
WEBOct 9, 2016 · A dimension is a collection of "reference information" about a measurable event. The Measurable event is a Fact. So, if you have data say for example - Retail …
Identifying the fact table in data warehouse design
WEBJul 14, 2015 · Can a fact table contain only foreign keys of dimensions and no measures? Yes. This is called a factless fact table.
Fact and Dimension Tables: One-to-One Relationship
WEBJun 26, 2012 · I'm trying to develop a suitable BI solution whereby the dimension and fact tables have a 1:1 relationship. Take, for example, the following: Fact_UserData. User ID. …
Dimensional design: not sure about fact vs. dimension for a …
WEBJun 5, 2012 · If you're finding that some kinds of queries aren't being helped along by your star because of what is a dimension and what is a fact, then you build additional stars …
Fact and Dimension Data-warehouse Datamart - Stack Overflow
WEBApr 20, 2021 · I have two fact tables (purchase and defect ) and both of them are linked to the same dimension. So my question can i combine the two fact to a single fact table …
whats the suggested order of extracting dimension/fact data?
WEBextract fact -> extract dimension -> load dimension -> load fact. aims to guarantee the referential integrity is kept. If we extract facts first, we will make sure that once we extract …
sql - How can I find the relationship between dimension and fact …
WEBMay 5, 2021 · The ETL must be running a look up on each dimension to get the PK to insert into the fact record, so the information will be there. There shouldn't be any …
What are the types of dimension tables in star schema design?
WEBSome authors suggest adding a special dimension called a data quality dimension to describe each facttable-record further. Typical values in a data quality dimension could …
How are fact tables formed in relation to the dimension tables?
WEBOct 9, 2020 · Fact tables do have a primary key but it is often implicit rather than explicit - so a group of the FKs in the fact table uniquely identify each record. This compound PK …
Why should we separate dimension and facts instead of …
WEBOct 23, 2014 · Normally, when we design data warehouse we will have fact tables and dimension tables. However, it does make sense to embed dimension in fact table. …
Fact Table with Primary Key and Foreign Keys - Stack Overflow
WEBMay 30, 2021 · Every table that has a composite key is a fact table. Fact tables express many-to-many relationships. All others are dimension tables. There are usually a …
What is exactly a measure in star schema in data warehouse …
WEBSep 30, 2011 · The Amount (1100, e.g.) is the Measure and it constitutes your facts (the non-identifying parts of the facts). The dimensions define consolidation functions for …
Dimensional Modeling: should a fact table have a foreign key?
WEBJul 9, 2009 · The case I can recall is when you use a table which contains attributes for dimension listing purposes and the tool requires to setup/flag/identify a table or alias …
How are dimensions and fact tables related in a star diagram?
WEBThese are the dimensions. The dimensions then have a primary key (possibly a combination of two rows), and the fact table has a foreign key to reference each …
Can observations in a fact table also be dimensions?
WEBAug 11, 2022 · My understanding is that a fact table uses keys, which are dimensions that ought to have their own dimension table, to identify observations and assign them …
SQL query to finding all facts tables and bridges of a dimension …
WEBSep 27, 2019 · select all values from a dimension for which there are facts in all other dimensions
dimension - Is there a concept of slowly changing FACT in data ...
WEBFeb 6, 2014 · In data warehousing, we have the concept of slowly changing dimensions. I am just wondering why there is no jargon for 'slowly/rapidly changing FACTs' because …
Related searches for identifying facts and dimensions site:stackov…
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