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D2000 system uses SQL databases, that are accessible via ODBC interface, as data storage. By default, the database PostgreSQL, SQL Adaptive Server Anywhere from the Sybase company and Microsoft SQL Server respectively its freeware version Microsoft Desktop Engine (MSDE) are supported.

The following table displays the number of connections to the database server:

ProcesConnection nameNumber
D2000 ServerConfiguration3
 Log database depository+3
 Backup (triggered externally)+1
ArchiveArchive database3
 Archive depository+3
 Backup+1
DBManager(configuration dependent) 


The table above shows, that any simple application with enabled both the log database depository and the process Archive can use as many as 14 connections to the database server. Selecting the option DB Engines in the process D2000 Application Manager, the window has looks like this one:


Clicking the right-mouse button on an existing server, you can carry out the following operations:

New ServerCreates a new db server
EditAllows to modify the selected db server
DeleteDeletes the selected db server
RunRuns the selected db server
StopStops the selected db server

Creating a new MSDE database servers (engines) through the process D2000 Application Manager is not supported, because the servers are created by the MSDE installation.

Creating a new PostgreSQL through the process D2000 Application Manager is not supported, because the servers are created by the PostgreSQL installation.


Sybase database server parameters:

The following dialog box will appear after selecting the New Server item in the pop-up menu:


Service NameSystem server name used for its saving. The server name is extended automatically according Service Name, but may be changed - the word placed after the parameter -n in the input field Parameters.
Service TypeIf Sybase Network server is installed, it is possible to configure it. Network server is not limited for number of connections.
VersionSelection of a version.
Path for executable

Path to an exe file representing the database server. The file is different according to the selected Service Type.

Startup

Definition of the server start-up. In this case, if the radio button Automatic is not selected, the service will be started automatically by the process D2Start that starts the process D2000 Server, too.

ParametersServer start parameters:


-c 8Mcache size


-nD2000_Xname of database server (Engine Name)


-mdeleting the log file after finishing the use of database


-gp 4096page size


-gd ALLsetting of database access level
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