fluent interface - Creating multiple contexts in Entity Framework Code First -

i struggling implement multiple database contexts in entity framework code first. have implemented 3 contexts (all entities, entities related conference , entities related user profile) shown on pictures.

fluent api used entity mappings. example code used conferencecontext:

public class conferencecontext : basecontext<conferencecontext> {     public dbset<conference> conferences { get; set; }     public dbset<importantdate> importantdates { get; set; }     public dbset<topic> topics { get; set; }     public dbset<venue> venues { get; set; }      protected override void onmodelcreating(dbmodelbuilder modelbuilder)     {         base.onmodelcreating(modelbuilder);          insertentitymappings(modelbuilder); // inserts entity mappings     }      private void insertentitymappings(dbmodelbuilder modelbuilder)     {         modelbuilder.configurations.add(new conferencemappings());         modelbuilder.configurations.add(new importantdatemappings());         modelbuilder.configurations.add(new topicmappings());         modelbuilder.configurations.add(new venuemappings());          modelbuilder.ignore<conferencecomment>();         modelbuilder.ignore<conferencerating>();         modelbuilder.ignore<connectionconferencerecommendation>();         modelbuilder.ignore<userprofile>();     } }  public class conferencemappings : entitytypeconfiguration<conference> {     public conferencemappings()     {         // primary key         this.haskey(t => t.conferenceid);         this.property(t => t.conferenceid).hasdatabasegeneratedoption(databasegeneratedoption.identity);          // properties         this.property(t => t.title)             .isrequired()             .hasmaxlength(150);          this.property(t => t.summary)             .hasmaxlength(1000);          this.property(t => t.contactemail)             .hasmaxlength(100);          this.property(t => t.websiteurl)             .isrequired()             .hasmaxlength(100);          this.property(t => t.logouri)             .hasmaxlength(100);          // table & column mappings         this.totable("conference");         this.property(t => t.conferenceid).hascolumnname("conferenceid");         this.property(t => t.title).hascolumnname("title");         this.property(t => t.summary).hascolumnname("summary");         this.property(t => t.contactemail).hascolumnname("contactemail");         this.property(t => t.websiteurl).hascolumnname("websiteurl");         this.property(t => t.logouri).hascolumnname("logouri");         this.property(t => t.begginingdate).hascolumnname("begginingdate");         this.property(t => t.endingdate).hascolumnname("endingdate");         this.property(t => t.venueid).hascolumnname("venueid");          // relationships         this.hasmany(t => t.topics)             .withmany(t => t.conferences)             .map(m =>             {                 m.totable("topicconference");                 m.mapleftkey("conference_conferenceid");                 m.maprightkey("topic_topicid");             });          this.hasoptional(t => t.venue)             .withmany(t => t.conferences)             .hasforeignkey(d => d.venueid);     } }  public class importantdatemappings : entitytypeconfiguration<importantdate> {     public importantdatemappings()     {         // primary key         this.haskey(t => t.importantdateid);         this.property(t => t.importantdateid).hasdatabasegeneratedoption(databasegeneratedoption.identity);          // properties         this.property(t => t.eventname)             .isrequired()             .hasmaxlength(100);          // table & column mappings         this.totable("importantdate");         this.property(t => t.importantdateid).hascolumnname("importantdateid");         this.property(t => t.date).hascolumnname("date");         this.property(t => t.eventname).hascolumnname("eventname");          // relationships         this.hasrequired(t => t.conference)             .withmany(t => t.importantdates)             .hasforeignkey(t => t.conferenceid);     } }  public class topicmappings : entitytypeconfiguration<topic> {     public topicmappings()     {         // primary key         this.haskey(t => t.topicid);         this.property(t => t.topicid).hasdatabasegeneratedoption(databasegeneratedoption.identity);          // properties         this.property(t => t.name)             .isrequired()             .hasmaxlength(100);          // table & column mappings         this.totable("topic");         this.property(t => t.topicid).hascolumnname("topicid");         this.property(t => t.name).hascolumnname("name");     } }  public class venuemappings : entitytypeconfiguration<venue> {     public venuemappings()     {         // primary key         this.haskey(t => t.venueid);         this.property(t => t.venueid).hasdatabasegeneratedoption(databasegeneratedoption.identity);          // properties         this.property(t => t.address)             .hasmaxlength(100);          this.property(t => t.city)             .hasmaxlength(50);          this.property(t => t.state)             .hasmaxlength(50);          // table & column mappings         this.totable("venue");         this.property(t => t.venueid).hascolumnname("venueid");         this.property(t => t.address).hascolumnname("address");         this.property(t => t.city).hascolumnname("city");         this.property(t => t.state).hascolumnname("state");         this.property(t => t.countryid).hascolumnname("countryid");          // relationships         this.hasoptional(t => t.country)             .withmany(t => t.venues)             .hasforeignkey(d => d.countryid);     } } 

can me create context similar 1 shown on picture below.