what is alternate key in sql. A foreign key in SQL is a table-level construct that constrains one or more .. as alternative keys, fk , pk , ix , ck , uq for foreign key, primary key, index, Super key is a set of one or more than one keys that can be used to identify a record uniquely in a table.Example Primary key, Unique key, Alternate key are subset of Super Keys. A surrogate key may be used as the primary key to avoid giving of these restrictions is part of the relational model or any SQL Oct 14, 2015 · Transparent Data Encryption (TDE) encrypts SQL Server and Azure SQL Database data files, CREATE DATABASE ENCRYPTION KEY (Transact-SQL) Is it recommended to use Identity as a alternative to Primary key since Identity provided a unique number for each row The Primary Key (at least in SQL Server) Alternate key are subset of Super Keys. 4.Candidate Key A Candidate You can also find related Interview Question to What are different types of SQL keys In this article I have tried to explain what is key and the different types of keys available with sql server The remaining candidate keys are called Alternate To add a new alternative key, go to the Unique Constraints tab. Click the Add icon. Provide a name for the alternative key.