A key is a set of attributes that is irreducibly unique and non-nullable within a table.
Above is my simple database design, just wanted to gain information about how things happen as I'm really new at …
sql-server database foreign-keys primary-key rdmsI need a function which executes an INSERT statement on a database and returns the Auto_Increment primary key. I …
sql database ms-access primary-key jetI've created a table without a primary key (:id => false), but now it has come back to bite my …
ruby-on-rails migration primary-key keyI have table 1 with a primary key user_id and table 2 where user_id is a foreign key. Only 1 record …
mysql foreign-keys primary-key foreign-key-relationship primary-key-designI'm trying to set up a Sybase query that will give me the following output: Table KeyType KeyNumber Column table1 …
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entity-framework primary-key repository-pattern entity-framework-coreIf I set a primary key in multiple columns in Oracle, do I also need to create the indexes if …
oracle indexing primary-key multiple-columnsI've just come across something disturbing, I was trying to implement transactional replication from a database whose design is not …
sql-server primary-key transactional-replicationI am currently developing an application for Azure Table Storage. In that application I have table which will have relatively …
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