Difference between Fact table and Dimension table?
Nov 17, 2013 · In Data Warehouse Modeling, a star schema and a snowflake schema consists of Fact and Dimension tables. Fact Table: It contains all the primary keys of the dimension and …
Time and date dimension in data warehouse - Stack Overflow
19 I'm building a data warehouse. Each fact has it's timestamp. I need to create reports by day, month, quarter but by hours too. Looking at the examples I see that dates tend to be saved in …
sql - In a datawarehouse can a dimension be related to another ...
Feb 1, 2022 · 2 I am currently developing a Data Warehouse and I was wondering if it makes sense to have a dimension connected to another via a foreign key. For example, let's say we …
sql - Handling nulls in Datawarehouse - Stack Overflow
Nov 13, 2012 · I'd like to ask your input on what the best practice is for handling null or empty data values when it pertains to data warehousing and SSIS/SSAS. I have several fact and …
data warehouse - Database - fact table and dimension table
Mar 30, 2012 · A dimension table is a table containing data that you don't want to constantly repeat in the fact table, for example, product data, statuses, customers etc. They are related …
data warehouse - Calendar Dimension in Datawarehouse …
Jun 21, 2023 · 1 According to the Kimball methodology, the decision to use two separate dimension tables for dates depends on the requirements and characteristics of the data. …
Start and end period in each fact within a data warehouse
3 I have been asked to add a new table to our data warehouse. Currently, we separate our facts into monthly, quarterly, and yearly tables, with time dimensions for each. Each fact record has …
Data Modeling with a Time Dimension - Stack Overflow
Jan 17, 2021 · Why not a Date Dimension ? The Date Dimension is a key dimension in data warehousing as it allows to analyze data in different aspects of date. Apart from the standard …
data warehouse - Location dimension table - Stack Overflow
Location dimension is tricky, and Even Ralph Kimball recognizes that it is a challenge (see chapter 10 of Building the Data Warehouse). In you case, you actually need 5 dimensions, one …
Is it good practice to have foreign keys in a datawarehouse ...
Some databases have specific optimizations in places for star or snowflake structured data warehouses. In those cases, even on a read-only situation, the foreign keys can serve to alert …