Data Warehouse Considerations - SCD Type 2 vs Overwrite Dimension Tables
How we handle data warehousing updates to dimension tables is crucial and this article covers Slowly Changing Dimensions versus overwriting tables.
2024-12-20
How we handle data warehousing updates to dimension tables is crucial and this article covers Slowly Changing Dimensions versus overwriting tables.
2024-12-20
How much load do real time updates place on a data warehouse? Steve has a few thoughts on the analysis of the Amazon Redshift dataset, Redset.
2024-10-07
162 reads
Learn how you can handle dimensional modeling in a data warehouse when your data uses different categorization for ages.
2024-01-12
2,551 reads
Learn the basics of Apache Druid and how it can be used to ingest data into a data lake.
2023-11-10
14,466 reads
This article discusses different approaches of Upserts (update+inserts) in Amazon Redshift
2023-08-09
29,461 reads
This article gives an overview of Amazon Redshift, the cloud data warehouse in AWS.
2023-07-24
25,529 reads
In 2019 Canadian Broadcasting Corporation (CBC) news reported a massive data breach at the Desjardins Group, which is a Canadian financial service cooperative and the largest federation of credit unions in North America. The report indicated, a "malicious" employee copied sensitive personal information collected by Desjardins from their data warehouse. The data breach compromised the […]
2022-03-30
3,088 reads
In this tip we look at some things you should think about when planning for a SQL Server data warehouse.
2019-02-12
2,879 reads
The modern data warehouse design helps in building a hub for all types of data to initiate integrated and transformative solutions. To achieve these goals and to support modern designs, Microsoft has introduced a set of fully managed, cloud-based services that not only support modern data warehouse design patterns but also provide the advantages of inbuilt scalability, high availability, good performance, and flexibility.
2018-09-04
3,797 reads
It is ironic that the users of database application need to rely on the very technologists that created the system to then devise and run their acceptance tests. Surely someone has devised a test system for databases that is simple enough for ordinary tech-savvy people to use and for them to create the tests? Yes they have. Fitnesse DbFit is a mature product that can, and does, test SQL Server databases, and Nat Sundar explains how to set it up and do it.
2017-05-18
3,142 reads
Here’s a way to centralize management, rotate secrets conveniently without downtime, automate synchronization and...
This may or may not be helpful in the long term, but since I’m...
By Steve Jones
“I’m sick of hearing about Red Gate.” The first article in the book has...
Comments posted to this topic are about the item Dynamic T-SQL Script Parameterization Using...
I have read that the collation at the instance level cannot be changed. I...
hi our on prem STD implementation of SSAS currently occupies about 3.6 gig of...
In SQL Server 2022, I run this code:
CREATE SEQUENCE myseqtest START WITH 1 INCREMENT BY 1; GO CREATE TABLE NewMonthSales (SaleID INT , SecondID int , saleyear INT , salemonth TINYINT , currSales NUMERIC(10, 2)); GO INSERT dbo.NewMonthSales (SaleID, SecondID, saleyear, salemonth, currSales) SELECT NEXT VALUE FOR myseqtest , NEXT VALUE FOR myseqtest , ms.saleyear , ms.salemonth , ms.currMonthSales FROM dbo.MonthSales AS ms; GO SELECT * FROM dbo.NewMonthSales AS nmsAssume the dbo.MonthSales table exists. If I run this, what happens? See possible answers