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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ 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 HCL OneDB™.
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 HCL OneDB™ databases.
DataBlade® API Function ReferenceThe HCL OneDB™ DataBlade® API Function Reference describes the DataBlade® API functions and the subset of functions that the DataBlade® API supports.
Function descriptionsThis section gives comprehensive reference information about the functions that are valid within DataBlade® API modules. It lists the function descriptions in alphabetical order, with syntax, usage information, and return values for the functions.
The mi_set_default_database_info() functionThe mi_set_default_database_info() function sets the default database parameters with values from a database-information descriptor that the user provides.

The mi_set_default_database_info() function

The mi_set_default_database_info() function sets the default database parameters with values from a database-information descriptor that the user provides.

Syntax

mi_integer mi_set_default_database_info(db_info)
   MI_DATABASE_INFO *db_info;

db_info: A pointer to a user-provided database-information descriptor, which sets the default database parameters.


Valid in client LIBMI application?	Valid in user-defined routine?
Yes	Ignored

Usage

Client only: The mi_set_default_database_info() function sets default database parameters with user-defined values from the database-information descriptor (MI_DATABASE_INFO structure) that db_info references. The database parameters include the name of the database, the user account, and the account password. The mi_open() function can use these database parameters when it establishes a connection.

You must allocate this database-information descriptor before you call mi_set_default_database_info().

If you do not want to change a particular default value, set the string fields to a NULL-valued pointer and the integer fields to 0.

Server only: In a user-defined routine, the mi_set_default_database_info() function is ignored.

The mi_set_default_database_info() function initializes the DataBlade® API when it is the first DataBlade API function in a client LIBMI application or a UDR.

You can obtain the current database parameters with the mi_set_default_database_info() function.

For more information about the database-information descriptor or more information about how to use the database-information descriptor, see the HCL OneDB™ DataBlade API Programmer's Guide.

Return values

MI_OK: The function was successful.
MI_ERROR: The function was not successful.