customize the traccar server

hi. i would like to customize the server traccar. can i to do it ?
where can i have his architecture ?
where can I have the script of the database?
can i to connect it with sql server ? if yes, how to do it ?
how to build efficacely the source code ?

thanks

where can i have his architecture ?
MVC
MAVEN
Backend: Java
Frontend: ExtJS
DB: H2 or MySQL
where can I have the script of the database?
Just start the site and make a dump of the MySQL database.
can i to connect it with sql server ? if yes, how to do it ?
Yes, you can!
how to build efficacely the source code ?
The source code is very nice, very optimized. Anton is a top programmer.
I use IntelliJ IDEA, just import the project, you do not need anything else.

thanks for explications.
i downloaded the sources of server and i would like to personalize it but before
i would like well to know it

Great! Do it!
Let us know your advances

I first imported the zip file with netbeans 8.2.
Then I configured traccar to run with sql server 2014.
I executed the traccar project and he created tables (38 tables) in my database.
I'm waiting since the execution ends but nothing.
Is it already two hours since I wait for the end of its execution?

What are you waiting for exactly?

[main] INFO liquibase.changelog.ChangeSet - Default value dropped from tc_notifications.sms
[main] INFO liquibase.executor.jvm.JdbcExecutor - select schema_name()
[main] INFO liquibase.executor.jvm.JdbcExecutor - ALTER TABLE tc_notifications DROP COLUMN sms
[main] INFO liquibase.changelog.ChangeSet - Column tc_notifications.sms dropped
[main] INFO liquibase.changelog.ChangeSet - ChangeSet changelog-4.0::changelog-4.0::author ran successfully in 111ms
[main] INFO liquibase.executor.jvm.JdbcExecutor - select schema_name()
[main] INFO liquibase.executor.jvm.JdbcExecutor - INSERT INTO DATABASECHANGELOG (ID, AUTHOR, FILENAME, DATEEXECUTED, ORDEREXECUTED, MD5SUM, DESCRIPTION, COMMENTS, EXECTYPE, CONTEXTS, LABELS, LIQUIBASE, DEPLOYMENT_ID) VALUES ('changelog-4.0', 'author', 'changelog-4.0', GETDATE(), 25, '8:2dc212cd1449b38fd8bb5038d199f720', 'dropDefaultValue columnName=web, tableName=tc_notifications; dropColumn columnName=web, tableName=tc_notifications; dropDefaultValue columnName=mail, tableName=tc_notifications; dropColumn columnName=mail, tableName=tc_notifications; dropDefaultVa...', '', 'EXECUTED', NULL, NULL, '3.6.2', '3854257284')
[main] INFO liquibase.executor.jvm.JdbcExecutor - select schema_name()
[main] INFO liquibase.lockservice.StandardLockService - Successfully released change log lock
[main] INFO org.eclipse.jetty.util.log - Logging initialized @34930ms
[main] INFO org.eclipse.jetty.server.Server - jetty-9.2.24.v20180105
[main] INFO org.eclipse.jetty.server.handler.ContextHandler - Started o.e.j.s.ServletContextHandler@3e5fd2b1{/api,null,AVAILABLE}
[main] INFO org.eclipse.jetty.server.handler.ContextHandler - Started o.e.j.s.ServletContextHandler@4462efe1{/console,null,AVAILABLE}
[main] INFO org.eclipse.jetty.server.handler.ContextHandler - Started o.t.w.@37854b34{/,null,AVAILABLE}
[main] INFO org.eclipse.jetty.server.ServerConnector - Started ServerConnector@724b939e{HTTP/1.1}{0.0.0.0:8082}
[main] INFO org.eclipse.jetty.server.Server - Started @51859ms.

he stopped here. it is normal ?

Yes, that means your server is running.

which class or module is responsible for managing the communication with the GPS units?
what if i want to grass for example at godaddy?

thanks