• Tedamoh ACADEMY

    Secret Spice

One of my most successful blog posts, the article on generating large sample data with the TPC-H benchmark, receives an update.

Change Data Capture detects changes to data. In the case of deleted data, the question is: How should we manage deletions in Data Vault?

8 reasons why temporal data is needed

This time, FastChangeCoTM's Data Management Center of Excellence (DMCE) team looks at the question: what are the business requirements for bitemporal data?

PowerDesigner is currently only available for the Windows operating system. So far, so familiar. Amal Leyla Qasim, a data modeler on the Data Management Center of Excellence (DMCE) team, has set her sights on switching her workstation to an Apple MacBook Air.

TEDAMOH - Secret Spice Data Vault timeline - Picture by Parrish Freeman on Unsplash

Does the Load Date Timestamp (LDTS) data element in the hub, link, or satellite capture the timestamp of the batch, or rather the transaction timestamp at which the data originated in the operational system?

In several projects, FastChangeCo's data modelers on the Data Management Center of Excellence (DMCE) team had an issue with the way PowerDesigner generates comments for tables and columns for the SQL Server database. Xuefang Kaya (one of the data modelers on the team), asked about the problems, says to the DMCE team:

At FastChangeCo, the data modelers within the Data Management Center of Excellence (DMCE) team are constantly designing new database objects to store data. One of the data modelers on the team is Xuefang Kaya. When she takes a new user story/task, she usually models multiple tables, their columns, and specifies a data type for each column.

PowerDesigner offers the possibility to edit the properties for a database in the so-called DBMS resource files. The DMBS resource files contain all information for PowerDesigner to generate DDL, DML and other SQL artifacts. For many databases, there are pre-built, included DBMS resource files for the different database versions.