What is 'foreign key' in SAP BC-DWB-DIC - ABAP Dictionary?

foreign key - Overview

• Component: BC-DWB-DIC

• Component Name: ABAP Dictionary

• Description: The definition of a relationship between two tables. One or more columns of a database table that are primary keys of another database table. A foreign key assigns the fields of one table known as the foreign key table to the primary key fields of another table known as the check table. Foreign keys are used to check input on screen templates, and to define the relationships between the tables in a view, matchcode object, or lock object.

foreign key - Details

• 
  Key Concepts: 
  A foreign key is a field in a database table that is used to link two tables together. It is a reference to the primary key of another table, which ensures that the data in the two tables is consistent and related. In SAP, foreign keys are used to ensure data integrity and consistency between different tables. 
  
  How to use it: 
  In SAP, foreign keys are used to link two tables together. When creating a foreign key, you must specify the name of the table that contains the primary key and the name of the field that contains the primary key. The foreign key must also be defined in the same database as the primary key. Once created, the foreign key can be used to join two tables together and ensure data integrity and consistency between them. 
  
  Tips & Tricks: 
  When creating a foreign key, make sure that it is defined in the same database as the primary key. This will ensure that data integrity and consistency is maintained between the two tables. Additionally, make sure that you specify both the name of the table containing the primary key and the name of the field containing the primary key when creating a foreign key. 
  
  Related Information: 
  For more information on foreign keys in SAP, please refer to SAP's BC-DWB-DIC ABAP Dictionary documentation. Additionally,