Data Types

A data type refers to a value set and an operation set defined on the value set. GaussDB consists of tables, each of which is defined by its own columns. Each column corresponds to a data type. GaussDB uses corresponding functions to perform operations on data based on data types. For example, GaussDB can perform operations such as addition, subtraction, multiplication, and division on numeric data.

XML data can be used as input parameters, output parameters, user-defined variables, and return values of stored procedures, as well as stored procedures that support autonomous transactions.