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A SQL  transaction is a unit of work that is performed against a database. SQL Transactions are units or sequences […]

SQL Alternate key is a secondary key it can be simple to understand by an example: Let\’s take an example

A sql unique key is a set of one or more than one fields/columns of a table that uniquely identify

A sql composite key is a combination of two or more columns in a table that can be used to

SQL FOREIGN KEY In the relational databases, a foreign key is a field or a column that is used to

SQL PRIMARY KEY : A column or columns is called primary key (PK) that uniquely identifies each row in the table. If you

A key is a single or combination of multiple fields in a table. Its is used to fetch or retrieve

In SQL Comments, you can comment your code just like any other language. Comments can appear on a single line

SQL Wildcard operators are used with LIKE operator, there are four basic operators: Operator Description % It is used in

The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. There are