4D v16.3
OPEN DATABASE
- 4D Language Reference
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- 4D Environment
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- Application file
- Application type
- Application version
- BUILD APPLICATION
- Compact data file
- COMPONENT LIST
- CREATE DATA FILE
- Data file
- Get 4D fileNew
- Get 4D folderUpd
- Get database localization
- Get database measures
- Get database parameter
- Get last update log path
- GET SERIAL INFORMATION
- Get table fragmentation
- Is compiled mode
- Is data file locked
- NOTIFY RESOURCES FOLDER MODIFICATION
- OPEN ADMINISTRATION WINDOW
- OPEN DATA FILE
- OPEN DATABASE
- OPEN SECURITY CENTER
- OPEN SETTINGS WINDOWUpd
- PLUGIN LIST
- QUIT 4D
- RESTART 4D
- SET DATABASE LOCALIZATION
- SET DATABASE PARAMETER
- SET UPDATE FOLDER
- Structure file
- VERIFY CURRENT DATA FILE
- VERIFY DATA FILE
- Version type
- _o_ADD DATA SEGMENT
- _o_DATA SEGMENT LIST
OPEN DATABASE
| OPEN DATABASE ( filePath ) | ||||||||
| Parameter | Type | Description | ||||||
| filePath | String |
|
File name (.4db, .4dc, .4dbase or .4dlink) or complete access path of database to open | |||||
The OPEN DATABASE command closes the current 4D database and opens on-the-fly the database defined by filePath. This command is useful for automatic testing purposes, or to reopen a database automatically after a compilation.
In the filePath parameter, pass the name or full access path of the database to be opened. You can use files having one of the following extensions:
- .4db (interpreted structure file),
- .4dc (compiled structure file),
- .4dbase (OS X package),
- .4dlink (shortcut file).
If you pass only a file name, this file must be placed at the same level as the structure file of the current database.
If the access path defines a valid database, 4D quits the database that is already open and then opens the specified database. In single-user mode, the On Exit database method of the database being closed and the On Startup database method of the database being opened are called successively.
Warning: Since this command causes the application to quit before re-opening with the specified database, it is not recommended to use it in the On Startup database method, or in a method called by this database method.
The command is executed in an asynchronous manner: after its call, 4D continues executing the rest of the method. Then, the application behaves as if the Quit command was selected in the File menu: open dialog boxes are cancelled, any open processes have 10 seconds to finish before being terminated, and so on.
If the target database file is not found or is invalid, a standard file system error is returned and 4D does nothing.
This command can only be executed from a standard database. If it is called from an engined application (single user or server), the error -10509 "Can't open database" is returned.
OPEN DATABASE("C:\\databases\\Invoices\\Invoices.4db")
Product: 4D
Theme: 4D Environment
Number:
1321
Created: 4D v14 R3
4D Language Reference ( 4D v16)
4D Language Reference ( 4D v16.1)
4D Language Reference ( 4D v16.2)
4D Language Reference ( 4D v16.3)
