Author Archives: user

MySQL – Foreign Key Table of content In MySQL, a Foreign Key is a column (or combination of columns) in a table whose values match the values of a Primary Key column in another table. Thus, using the Foreign key, we can link two tables together. A Foreign Key is also known as a Referencing […]

MySQL – Composite Key Table of content A MySQL Composite Key is a key that consists of two or more columns in a table, used to uniquely identify a record (combination of values in the same table row). It can also be described as a Primary Key created on multiple columns. With composite key on […]

MySQL – ANY Operator Table of content The operators in MySQL have the same meaning as that of operators in mathematics. They are keywords that are used in MySQL statements for performing comparisons or logical operations. ANY Operator in MySQL The MySQL ANY keyword can be used with a comparison operator (such as =, <, […]