Column Table Alias
Column Table Alias is the alias of the table containing the column with which the property is associated. The alias is a unique SQL identifier for the table. It is used to reference the table in join specifications and in generated SQL.
An alias (usually a shorter version of the table name) can make a SQL statement shorter and easier to read. Aliases are also useful when working with multiple instances of the same table when you need to refer to one instance or the other.