A simple script from my archive lists all constraints from sys.objects, so you can check each foreign key and primary key constraint in database tables.
SQL SERVER – 2005 – Find Tables With Primary Key Constraint in Database
A script to find tables with primary key constraint in a SQL Server 2005 database, listing the index name, table name and column name from sys.indexes.
SQL SERVER – 2005 – Find Tables With Foreign Key Constraint in Database
A foreign key inventory needs both the constraint and its column pairings. I include schema names to identify each table clearly.
SQL SERVER – 2005 – Create Script to Copy Database Schema and All The Objects – Stored Procedure, Functions, Triggers, Tables, Views, Constraints and All Other Database Objects
A step by step tutorial to create a T-SQL script that can copy database schema and all objects, like stored procedures, functions, triggers, tables and views.
SQL SERVER – 2005 – List Tables in Database Without Primary Key
A simple script to list tables in database without primary key, using sys.tables and OBJECTPROPERTY TableHasPrimaryKey in SQL Server 2005.
SQL SERVER – 2005 Constraint on VARCHAR(MAX) Field To Limit It Certain Length
SQL Server 2005 has no VARCHAR(12500), so how do you cap a VARCHAR(MAX) field at 12500 characters? A constraint on the column does the job.
SQL SERVER – Primary Key Must Not Contain NULL – Primary Key are NOT NULL
Can you have a nullable primary key? No. A primary key must not contain NULL: Allow Nulls cannot be set on its columns, and all values must be unique.