Learn some of the best practices for handling null values in Informatica PowerCenter, a popular ETL tool, such as using functions, transformations, and data quality features.

In database applications, a null object is a valid value for a field. This class differentiates between a null value (a null object) and an uninitialised value (the DBNull.Value instance).

Depending on the application logic, NOT NULL columns should either have a presence: true validation defined in their Model or have a default value as part of their database definition. As an example, ...

More preferable might be a description of “direct-NULL” when using a NULL and an “indirect-NULL” when using a “NULL value” surrogate. Ultimately, whether a direct-NULL or an indirect-NULL approach is ...

Nulls are deceptive in subtle ways. As an exam­ple, consider a table with 10 rows and a column named Test_Code, and that five of the rows have a value of “X” in Test_Code, while “Y” is the value in ...