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- foreign key constraint naming scheme - Stack Overflow
What is a standard naming scheme to use for foreign key constraints? Given these tables task (id, userid, title) note (id, taskid, userid, note); user (id, name) where Tasks have Notes, Tasks are
- How to rename FK in MS SQL - Stack Overflow
will rename FK_Employee_Person_BusinessEntityID found in the HumanResources schema to FK_EmployeeID If the schema is missing, SQL Server looks for objects in the user's default schema, which is often the dbo schema
- Differences between foreign key and constraint foreign key
I mean for example I can create table like create table XTable ( idt int not null primary key, value nvarchar(50), idq int, constraint fk_idq foreign key(idq) references YTable(idq) ) and
- List of foreign keys and the tables they reference in Oracle DB
I'm trying to find a query which will return me a list of the foreign keys for a table and the tables and columns they reference I am half way there with SELECT a table_name, a column_n
- Does a foreign key automatically create an index?
An FK-relationship will often need to look up a relating table and extract certain rows based on a single value or a range of values So it makes good sense to index any columns involved in an FK, but an FK per se is not an index Check out Kimberly Tripp's excellent article "When did SQL Server stop putting indexes on Foreign Key columns?"
- How can I list all foreign keys referencing a given table in SQL Server . . .
I need to remove a highly referenced table in a SQL Server database How can I get a list of all the foreign key constraints I will need to remove in order to drop the table? (SQL answers prefera
- Alter table to give foreign key constraint - Stack Overflow
I have a table which has 2 columns which I copied from two different tables What I want to do now is give a foreign key constraint on both the column names email and id shown below ALTER TABLE
- sql - Foreign Keys vs Joins - Stack Overflow
Joins are defined using foreign keys only False! Using foreign key will better the performance Also false In fact, if anything, FK's can hurt performance, though only rarely to any noticeable degree that justifies removing then
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