MATLAB DATABASE TOOLBOX RELEASE NOTES Guide de l'utilisateur télécharger pdf (Page 419)

Setting Database Preferences Using the setdbprefs Function

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Property Allowable Values Description

'NullStringRead' Input value, for

example, 'null'

(default)

Specify how NULL strings appear after being

imported from a database into the MATLAB

workspace. Set this parameter before running

fetch.

'NullStringWrite' Input value, for

example, 'null'

(default)

Strings in the specified format, for example,

'NULL', appear as NULL after being exported

from the MATLAB workspace to a database.

Additional Properties and Values for setdbprefs

Property Allowable Values Description

'JDBCDataSourceFile' Input value, for

example, 'D:/

file.mat'

Path to MAT-file containing JDBC data

sources.

'UseRegistryForSources' 'yes' (default) or

'no'

When set to yes, VQB searches the

Microsoft Windows registry for ODBC data

sources that are not uncovered in the system

ODBC.INI file. This message might appear:

Registry editing has been disabled

by your administrator. You can ignore

this harmless message.

'TempDirForRegistryOutput'Input value, for

example, 'D:/

work'

Folder where VQB writes ODBC registry

settings when you run getdatasources.

Use when you add data sources and do

not have write access to the MATLAB

Current Folder. The default is the Windows

temporary folder, which is returned by the

command getenv('temp').

If you specify a folder to which you do not

have write access or which does not exist,

this error appears:

Cannot export

<folder-name>\ODBC.INI:

Error opening the file.

There may be a disk

or file system error.

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