What is 'not-null constraint' in SAP EIM-DI-DF - SAP BusinessObjects Data Federator?

not-null constraint - Overview

• Component: EIM-DI-DF

• Component Name: SAP BusinessObjects Data Federator

• Description: A constraint that verifies that none of the values in a column are null.

not-null constraint - Details

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  Key Concepts: 
  A not-null constraint is a type of data integrity constraint in SAP BusinessObjects Data Federator (EIM-DI-DF). It ensures that a column in a table cannot contain any null values. This means that the column must contain a value, even if it is an empty string or zero. 
  
  How to use it: 
  To use a not-null constraint, you must first create a table in SAP BusinessObjects Data Federator. Then, when creating the columns for the table, you can specify that certain columns must have a not-null constraint. This will ensure that any data entered into those columns must have a value. 
  
  Tips & Tricks: 
  When creating a not-null constraint, it is important to consider the data type of the column. For example, if the column is an integer type, then it cannot contain an empty string or zero as these are not valid values for an integer type. 
  
  Related Information: 
  Not-null constraints are just one type of data integrity constraint available in SAP BusinessObjects Data Federator. Other types of constraints include unique constraints, primary key constraints, and foreign key constraints. All of these constraints help to ensure that the data stored in the database is valid and accurate.