Data Types

Data Types

Data types are the most basic elements in the model. They represent the minimal data storage containers.

Data types are used in the following elements:

Data types are used both internally as types for data storage and also for mapping to data types of external sources, e.g. data types of SQL Server.

Basic Data Types

These are the basic data types. You can use these types to define entity fields.

Type Description MS SQL Type
Boolean Can be True or False. bit
Blob Large binary objects, e.g. for storing files or pictures. blob
Currency For storing currency amounts money
Date Capable of storing date and time values datetime
Long Non-decimal, long integer values bigint
Memo Texts of unlimited length ntext
Float Decimal numbers decimal(18,10)
Integer Non-decimal numbers int
String Texts of limited length nvarchar
UniqueIdentifier Globally unique identifier (GUID), for specifying primary keys uniqueidentifier
Geography Used for storing GPS coordinates. geography


When saving values of this data type to a database use either a Map View or use a WKT synthax ie. “POINT (47.651 14.111)”.

Formulas for latitude/longitude conversions can be found here.

Extended Data Types

Extended data types are not used for data storage but for defining function or service parameters:

Type Description MS SQL Type
Xml Used to transfer complex data between functions (e.g. metadata references) not mapped
Array Used for specifying that e.g. the parameter expects multiple values AsapArray custom type