Configuration of Business Data to Postgres Database

Hello,

I'm having issues configuring postgres with the business data source. I'm following the below documentation. Do I have to configure this setup before I perform initial install?

It states that I have configure BusinessDataDS and NotManagedBizDataDS source then below that it has special configurations for tomcat. I'm a little confused.
http://documentation.bonitasoft.com/database-configuration-business-data-1

Tomcat will not start.

java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy37.login(Unknown Source)
at org.bonitasoft.studio.engine.BOSEngineManager.postEngineStart(BOSEngineManager.java:142)
at org.bonitasoft.studio.engine.BOSEngineManager.start(BOSEngineManager.java:133)
at org.bonitasoft.studio.application.job.StartEngineJob.run(StartEngineJob.java:46)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.apache.http.client.HttpResponseException: Not Found
at org.bonitasoft.engine.api.HTTPServerAPI.invokeMethod(HTTPServerAPI.java:143)
at org.bonitasoft.engine.api.impl.ClientInterceptor.invoke(ClientInterceptor.java:88)
at com.sun.proxy.$Proxy37.login(Unknown Source)
at org.bonitasoft.studio.engine.BOSEngineManager.postEngineStart(BOSEngineManager.java:142)
at org.bonitasoft.studio.engine.BOSEngineManager.start(BOSEngineManager.java:133)
at org.bonitasoft.studio.application.job.StartEngineJob.run(StartEngineJob.java:46)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
at < ========== Beginning of the server stack trace ========== >. ( )
at org.bonitasoft.engine.http.BonitaResponseHandler.handleResponse(BonitaResponseHandler.java:44)
at org.bonitasoft.engine.http.BonitaResponseHandler.handleResponse(BonitaResponseHandler.java:29)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:1142)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:1076)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:1050)
at org.bonitasoft.engine.api.HTTPServerAPI.executeHttpPost(HTTPServerAPI.java:165)
at org.bonitasoft.engine.api.HTTPServerAPI.invokeMethod(HTTPServerAPI.java:135)
at org.bonitasoft.engine.api.impl.ClientInterceptor.invoke(ClientInterceptor.java:88)
... 5 more

!ENTRY org.bonitasoft.studio.common 4 0 2015-08-19 10:44:38.688
!MESSAGE
!STACK 0
java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy37.login(Unknown Source)
at org.bonitasoft.studio.engine.BOSEngineManager.executePostStartupContributions(BOSEngineManager.java:207)
at org.bonitasoft.studio.engine.BOSEngineManager.postEngineStart(BOSEngineManager.java:152)
at org.bonitasoft.studio.engine.BOSEngineManager.start(BOSEngineManager.java:133)
at org.bonitasoft.studio.application.job.StartEngineJob.run(StartEngineJob.java:46)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.apache.http.client.HttpResponseException: Not Found
at org.bonitasoft.engine.api.HTTPServerAPI.invokeMethod(HTTPServerAPI.java:143)
at org.bonitasoft.engine.api.impl.ClientInterceptor.invoke(ClientInterceptor.java:88)
at com.sun.proxy.$Proxy37.login(Unknown Source)
at org.bonitasoft.studio.engine.BOSEngineManager.executePostStartupContributions(BOSEngineManager.java:207)
at org.bonitasoft.studio.engine.BOSEngineManager.postEngineStart(BOSEngineManager.java:152)
at org.bonitasoft.studio.engine.BOSEngineManager.start(BOSEngineManager.java:133)
at org.bonitasoft.studio.application.job.StartEngineJob.run(StartEngineJob.java:46)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
at < ========== Beginning of the server stack trace ========== >. ( )
at org.bonitasoft.engine.http.BonitaResponseHandler.handleResponse(BonitaResponseHandler.java:44)
at org.bonitasoft.engine.http.BonitaResponseHandler.handleResponse(BonitaResponseHandler.java:29)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:1142)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:1076)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:1050)
at org.bonitasoft.engine.api.HTTPServerAPI.executeHttpPost(HTTPServerAPI.java:165)
at org.bonitasoft.engine.api.HTTPServerAPI.invokeMethod(HTTPServerAPI.java:135)
at org.bonitasoft.engine.api.impl.ClientInterceptor.invoke(ClientInterceptor.java:88)
... 6 more