If you are working with SQL DB2, you may need to create tables that have primary and foreign keys to enforce data integrity and establish relationships between different entities.

You can create foreign keys in SQL Server using either the graphical user interface (GUI) or the Transact-SQL (T-SQL) language. The GUI method involves using the Table Designer tool in SQL Server ...

The first form of the CREATE TABLE statement creates tables that automatically map SQL data types to those supported by the SAS System. Use this form when you want to create a new table with columns ...

When I try to execute a CREATE TABLE-query with multiple foreign keys, that reference the same table, it fails with: "1105 - a foreign key with the name 4k50m025 already ... isn't working correctness ...

mysql> ALTER TABLE `UserRoleCompanie` ADD COLUMN `companieId` char(25) CHARACTER SET utf8 NOT NULL; Query OK, 0 rows affected (0.32 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> ALTER TABLE ...

What's the neater way to do this? I've got a data in a field 'foreignkey' in a particular table which is made up of various foreign keys delimited by '~' eg PLIE312~AP~347~212121~1~no I'm having ...