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Extending Informix®Beyond standard relational database objects, HCL Informix® can be extended to handle specialized data types, access methods, routines, and other objects. Informix® includes many built-in extensions that are fully integrated in the database server. Informix® also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for Informix®.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in Informix® databases.
DataBlade® API Programmer's GuideThe Informix® DataBlade® API Programmer's Guide describes information about the DataBlade® API, the C-language application programming interface (API) provided with HCL Informix®.
Data manipulation
Date and time data typesThis section describes the date and time data types and the functions that the DataBlade® API supports to process date and time data.

Date and time data types

This section describes the date and time data types and the functions that the DataBlade® API supports to process date and time data.

The DataBlade API provides support for the following date and time data types.


SQL date and time data type	Standard C or ESQL/C date and time data type	DataBlade API date and time data type
DATE	C: four-byte integer Informix® ESQL/C: date	mi_date
DATETIME	Informix ESQL/C: datetime, dtime_t	mi_datetime
INTERVAL	Informix ESQL/C: interval, intrvl_t	mi_interval

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