Author Archives: user

SQL – Check Constraint Table of content The SQL CHECK Constraint The SQL CHECK constraint is used to add conditions on a column of a table. Once you add the check constraint on a column, it ensures that the data entered into the column meets the specified conditions. If a particular record does not meet […]

SQL – Null Functions Table of content SQL NULL functions are used to perform operations on NULL values that are stored in the database tables. A NULL value serves as a placeholder in the database when data is absent or the required information is unavailable. It is a flexible value not associated to any specific […]

SQL – Hosting Table of content SQL Hosting SQL Hosting is nothing but a means to manage any RDBMS linked to your website using SQL. If the website has an access to a RDBMS, any data from the website you created will be stored and retrieved from this database. There are various SQL hosting plans […]