I’m trying to design a star-schema fact table along with some dimension tables that will surround it. If i reuse the natural key called customer_key in both the fact_table and dim_customer then I don’t see a difference between calling something dim and a lookup table. Additionally if I every need to update the customer name I will loose historical data that represented this fact at the time of the recording. What am I missing when trying to model the dim and fact tables?
I would like to understand difference between relational lookup table technique and data warehouse dimension table?
fact_table dim_customer dim_product ------------- ------------ ----------- customer_key customer_key product_key product_key name name units_sold email description unit_price
Please forgive any ignorance I might show in this question. I am a data warehouse newbie.
✓ Extra quality
ExtraProxies brings the best proxy quality for you with our private and reliable proxies
✓ Extra anonymity
Top level of anonymity and 100% safe proxies – this is what you get with every proxy package
✓ Extra speed
1,ooo mb/s proxy servers speed – we are way better than others – just enjoy our proxies!
USA proxy location
We offer premium quality USA private proxies – the most essential proxies you can ever want from USA
Our proxies have TOP level of anonymity + Elite quality, so you are always safe and secure with your proxies
Use your proxies as much as you want – we have no limits for data transfer and bandwidth, unlimited usage!
Superb fast proxy servers with 1,000 mb/s speed – sit back and enjoy your lightning fast private proxies!
99,9% servers uptime
Alive and working proxies all the time – we are taking care of our servers so you can use them without any problems
No usage restrictions
You have freedom to use your proxies with every software, browser or website you want without restrictions
Perfect for SEO
We are 100% friendly with all SEO tasks as well as internet marketing – feel the power with our proxies
Buy more proxies and get better price – we offer various proxy packages with great deals and discounts
We are working 24/7 to bring the best proxy experience for you – we are glad to help and assist you!